Question

Find the value of (a-b)(a+b) - (2a - b) (a+b) if a = 3, b= 2
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Answer 1

Answer:

-15

Step-by-step explanation:

5-(6-2)(5)

5-20= -15..

your ans is -15

Answer 2

Step-by-step explanation:

If A/3=b/2, then what is the value of (2a+3b)/(3a-2b)?

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If A/3=b/2, then what is the value of (2a+3b)/(3a-2b)?

Letting

A=a

means that

A/3=a/3.

Then a/3=b/2

means that

a3=b2,

that is,

a=3b2.

So (2a+3b)/(3a−2b)

=2a+3b3a−2b

=2(3b2)+3b3(3b2)−2b

=3b+3b(9b2)−2b

=6b(9b2−4b2)

=6b(5b2)

=(12b2)(5b2)

=12b5b

=125, b≠0.

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