Question

(x^2-4) -(x-2)(x+2)​

Answer 1

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Q:-(x^2-4) -(x-2)(x+2)

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$⟹( {x}^{2} - 4) - (x - 2)(x + 2)$

$⟹(x + y)(x - y) = {x}^{2} - {y}^{2}$

$⟹( {x}^{2} - {(2)}^{2} ) - ( {x}^{2} - {(2)}^{2} )$

$⟹ {x}^{2} - {(2)}^{2} - {x}^{2} + {(2)}^{2}$

$⟹ {x}^{2} - 4 - {x}^{2} + 4 = 0$

>$ans \: is \: 0$✓

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