Question

7 x minus 9 y whole to the power square

Answer 1

(7x - 9y)²

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By Formula,
$(a -b)^2 = a^2 + b^2 - 2ab$
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$(7x - 9y)^2$

$(7x)^2 + (9y)^2 -2(7x * 9y)$

$49x^2 + 81y^2 -126xy$



i hope this will help you


-by ABHAY

Answer 2

Hey friend,
Here is the answer you were looking for:
${(7x - 9y)}^{2}$

Using the identity :

${(a - b)}^{2} = {a}^{2} + {b}^{2} - 2ab$

Putting a = 7x
and b = 9y

$= {(7x)}^{2} + {(9y)}^{2} - 2(7x)(9y) \\ \\ = 49 {x}^{2} + 81 {y}^{2} - 126xy$

Hope this helps!!

If you have any doubt regarding to my answer, feel free to ask in the comment section or inbox me if needed.

@Mahak24

Thanks...
☺☺