## Quadratic Formula

Quadratic Formula See also Completing the square method Quadratic Equation by Factorization Method Factorization of Quadratic Expressions QUADRATIC EQUATION & SYMMETRIC PROPERTIES OF THE ROOT Completing the square

Quadratic Formula See also Completing the square method Quadratic Equation by Factorization Method Factorization of Quadratic Expressions QUADRATIC EQUATION & SYMMETRIC PROPERTIES OF THE ROOT Completing the square

See also Using logarithm to evaluate problems INDICIAL/EXPONENTIAL EQUATION BASIC CONCEPT & APPLICATION OF LAWS OF INDICES PERIMETER OF REGULAR PLANE SHAPES Geometry – Plane Shapes

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Statistics | Data Presentation See also CHANGE OF SUBJECT OF A FORMULA WORD PROBLEMS ALGEBRAIC PROCESSES APLLICATION OF BINARY NUMBERS BINARY NUMBERS

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SQUARES AND SQUARE ROOTS OF NUMBERS (1- digit and 2 – digit numbers) Example: 1: find 22 = 4 2 =( 2 x 2) + ( 4 x 4) = 4 + 16 = 20 Example 2: find 42 – 22 = (4×4) – (2 x 2) = 16 – 4 = 12 Example

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See also SURDS SOLVING PROBLEMS BASED ON LAWS OF LOGARITHM LOGARITHM OF NUMBERS LESS THAN ONE Using logarithm to solve problems with powers and root Using logarithm to evaluate problems

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SQUARES OR POWERS OF NUMBERS See also LOGARITHMS OF WHOLE NUMBERS INDICES STANDARD FORM AND APPROXIMATION MODULAR ARITHMETIC RULES OF BASE NUMBER

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ALGEBRAIC PROCESSES Objective: Use letter to generalize statements Interpret mathematical symbols Solve simple and problems Generating statement The following symbols are generally used in mathematics “=” means is equal to” Example: 13 – 6 = 7 means thirteen minus six is equal to seven “>” means is greater than” Example: 18 > 10 means eighteen

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CHANGE OF SUBJECT OF A FORMULA See also WORD PROBLEMS ALGEBRAIC PROCESSES APLLICATION OF BINARY NUMBERS BINARY NUMBERS SIMPLE EQUATION AND VARIATION

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APPROXIMATION AND ESTIMATION (SIGNIFCANT AND DECIMAL PLACES) SIGNIFICANT: TO ROUNDOFF A NUMBER CHANGE 0,1,2,3,4 TO 0 WHILE 5,6,7,8,9 TO 1 AND ADD IT TO THE NEXT NUMBER Example 1: round off 492.763 to (a) 3 s.f (b) 3 s.f (c) 2 d.p (d) 4 d.p Solution: (a). 492.763 = 49 (since the third number is

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L.C.M AND H.C.F (LOWEST AND HIGHEST COMMON FACTOR) See also OPERATIONS ON FRACTIONS FRACTIONS FRACTIONS WHOLE NUMBERS ALGERAIC FRACTIONS

The product of 2 and 3 is; 2 x 3 = 6 2 and 3 are factors of 6 The factors of a number are numbers that divide the number without a remainder EXAMPLE Find the common factors of 24 and 36 24 = 1 x 24 36 = 1 x 36 =

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STANDARD FORM AND APPROXIMATION See also MODULAR ARITHMETIC RULES OF BASE NUMBER NUMBER BASES BASIC OPERATIONS OF INTEGER SIMULTANEOUS EQUATIONS

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EXAMPLE Find the cost of 3 books at N91.55 each. Solution N91. 55 × 3 N274.65 EXERCISE 52 x 4 75 x 6 75 x 6 91 x 8 37 x 6 A bag of salt costs N585.40. how much will I pay for 5 bags? What is the cost of 6 meters of

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REVISION OF LOGARITHM OF NUMBERS GREATER THAN ONE AND LOGARITHM OF NUMBERS LESS THAN ONE See also MENSURATION Symmetric Properties of Roots Sum & Product of Roots of a Quadratic Equation Quadratic Formula Completing the square method

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Interest is the money paid for saving a particular amount of money. Simple interest can be calculated using the formula Simple interest I = PRT/100 Where P= principal, R=rate & T= time Also total amount =principal +interest Example 1 Find the simple interest on N60, 000 for 5 years at 9% per annum

MULTIPLICATION OF NUMBERS BY 2-DIGIT NUMBERS Example 1 multiply 25 by 12 Method 1: column form method 2: Expanded form 2 5 25 x 12 = 25 x (10 = 2) x 1 2 = (25 x 10) = (25 x 2) 2 5 0 (25 x 10) = 250 +

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Factorization of Quadratic Expressions See also QUADRATIC EQUATION & SYMMETRIC PROPERTIES OF THE ROOT Completing the square Matrices and Determinants SURDS SOLVING PROBLEMS BASED ON LAWS OF LOGARITHM

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See also INDICIAL/EXPONENTIAL EQUATION BASIC CONCEPT & APPLICATION OF LAWS OF INDICES PERIMETER OF REGULAR PLANE SHAPES Geometry – Plane Shapes SIMPLE EQUATIONS

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SIMULTANEOUS EQUATIONS CONTENT Solving Simultaneous Equations Using Elimination and Substitution Method Solving Equations Involving Fractions. Word problems. SIMULTANEOUS LINEAR EQUATIONS Methods of solving Simultaneous equation Elimination method Substitution method iii. Graphical method ELIMINATION METHOD One of the unknowns with the same coefficient in the two equations is eliminated by subtracting or adding the two

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