Question

(2x+5) (2x-5)
plz tell
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Answer 1

Answer:

(2x+5) (2x-5) = 2x² - 5²

= 4x² - 25

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Answer 2

It is a formula.....(a+b) (a-b)=(a)²-(b)²

Here a= 2x and b= 5

So, (2x)²-(5)²

4x²-25