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CONTENT

1. Revision of linear and quadratic expressions
2. Solution of quadratic expression of the form ab = 0, a = 0 or b = 0
3. Formation of quadratic equation with given roots

REVISION OF LINEAR AND QUADRATIC EXPRESSIONS

Any expression in which highest power of the unknown is 1 is called a linear expression. Some examples of linear expressions are: (a) x + 1   (b) 2y + 3   (c) p = −1/2

In general, linear expressions are expressions of the form ax + b, where a & b are constants and x is a variable.

A quadratic expression is that whose highest power of the unknown is 2. Examples are:

(a) x2 + 3x

(b) 2x2 − 6x + 10

Examples:  (i) Factorize the following quadratic expressions

(a) x2 + 4x

(b) 2x2 − 8x

Solution:

(a) x2 + 4x

x is a common factor of the terms x2 and 4x.

Lesson tags: General Mathematics Lesson Notes, General Mathematics Objective Questions, SS1 General Mathematics, SS1 General Mathematics Evaluation Questions, SS1 General Mathematics Evaluation Questions Second Term, SS1 General Mathematics Objective Questions, SS1 General Mathematics Objective Questions Second Term, SS1 General Mathematics Second Term
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