Question

Factorise : 9x2 -16y2​

Answer 1

Hey mate! so there is your answer,

Hope this will help you.

Give thanks if useful.

Answer 2

I think you asked

$9 {x}^{2} - 16 { y }^{2}$

Solution:-

$9 {x}^{2} \: could \: be \: written \: as \: {(3x)}^{2} . \\ \\ 16 {y}^{2} \: could \: be \: written \: as \: {(4y)}^{2} \\ \\ now \: (x + y)(x - y) = {x}^{2} - {y}^{2} \\ \\ hence \: by \: applying \: the \: formula \\ \\ we \: get \\ \\ (3x + 4y)(3x - 4y)$

That's all!

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