Question

25 x square minus 64y square . factorise

Answer 1

hello mate!.....


$given..... \\ \\ 25x {}^{2} - 64y {}^{2} \\ \\ 5 {}^{2} x {}^{2} - 8 {}^{2} y {}^{2} \\ \\ (5x) {}^{2} - (8y) {}^{2} \\ \\ we \: know.... \\ \\ x {}^{2} - y {}^{2} = (x + y)(x - y) \\ \\ (5x + 8y)(5x - 8y) \\ \\ hope \: it \: helps \: u \: dear....$

Answer 2

25x^2 - 64y^2
= (5x) ^2 - (8y)^2
= (5x+8y) (5x - 8y) ans.

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