Question

Express (x^2 +6x -7) (x^2 - 6x +7) as a difference two squares.

Answer 1

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ѕσℓυтισи!


(x² + 6x -7) (x² - 6x +7)

= [x² + (6x - 7)][x² + (6x - 7)]

= [(x²)² - (6x - 7)²].

glad help you

thanks...☻☻

Answer 2

$<b><i>Heya !$

Here's your answer !!

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Expressing the following as a difference of two squares :

( x² + 6x - 7 ) ( x² - 6x + 7 )

=> { x² + ( 6x - 7 ) } { x² - ( 6x - 7 ) }

We know -

( a + b ) ( a - b ) = a² - b²

Therefore,

=> ( x )² - ( 6x - 7 )² ANS

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Thanks !!