Question

evaluate 20a^2-45b^b​

Answer 1

Answer:

By Using identity ,

a²-b²= ( a+b)(a-b)

Given , = 20a²-45b²

It can be written as ,

= (2√5a)²-(3√5b)²

Here a= (2√5a)

b= (3√5b)

= (2√5a - 3√5b)(2√5a +3√5b)

Step-by-step explanation:

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