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Chapter 8: Q 155 (page 940)

Subtract5r2+7r-33r2-49-4r2+5r+30r2-49

Short Answer

Expert verified

The required expression isr+9r+7

Step by step solution

01

Given information

The given expression is5r2+7r-33r2-49-4r2+5r+30r2-49

02

Simplifying the expression

The denominator are same, combining the like terms after distributing the negative sign from second expression:

r2+2r-63r2-49

Factorizing the numerator and denominator:

(r+9)(r-7)(r+7)(r-7)

Cancelling the common factor from numerator and denominator:

r+9r+7

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Most popular questions from this chapter

Electronics The resistance of a circuit formed by connecting two resistors in parallel is 11R1+1R2.

  1. Simplify the complex fraction role="math" localid="1647789125778" 11R1+1R2.
  2. Find the resistance of the circuit when R1=8and R2=12.

In the following exercises, solve.

37+23=1w

In the following exercises, simplify.

36v3w327vw3

Solve :

1x-1=23x

Solve:

2x+1+1x-1=1x2-1
See all solutions

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