Question

Factorise 16p²-25q²​

Answer 1

$16p²-25q² \\ = ( {4p})^{2} - ( {5q)}^{2} \\ = (4p + 5q)(4p - 5q)$

Answer 2

Step-by-step explanation:

16p²-25q²

(4p)²-(5q)²

Now, using the formula.

a²-b²= (a-b) (a+b)

(4p)²-(5q)²= (4p-5q)(4p+5q)

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