Question

factorise ch algebraic identities

(64m^2-144mn+81n^2)-25p^2​

Answer 1

(64m²-144mn+81n²)-25p²=[(8m)²-2×8m×9n+(9n)²]-(5p)²

                                        =[(8m-9n)²]-(5p)²

                                        =[(8m-9n)+5p][(8m-9n)-5p]       [∵a²-b²=(a+b)(a-b)]

                                        =(8m-9n+5p)(8m+9n-5p)

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Answer 2

if you don't know then please don't answer.......

a huge request

please