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Q.

Check whether is it true or false? 4x²-16 = (2x-4)(2x+4)

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a

True

b

False

answer is A.

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Detailed Solution

detailed_solution_thumbnail

use the standard identity a² - b²,

a²-b²=(a+b)(a-b)

As per the given,

4x²-16=(2x)²- (4)²

4x²-16=(2x+4)(2x-4) where a=2x and b=4.

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Check whether is it true or false? 4x2-16 = (2x-4)(2x+4)