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Chapter 8: Q 147 (page 940)

Subtract 9a23a-7-493a-7

Short Answer

Expert verified

The required expression is3a+7.

Step by step solution

01

Given information

The given expression is9a23a-7-493a-7

02

Simplifying the expression

The given two rational expressions have the same denominator, combining the terms:

9a2-493a-7

Factorizing the numerator:

(3a-7)(3a+7)3a-7

Cancelling the common term from numerator and denominator:

3a+7

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