Question

factorise - 25x^4 - 60x^2 y^2 + 36y^4

Answer 1

Answer:

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Answer 2

25x^4 -2(5x^2)(6y^2) + 36y^4

USING FORMULA:

a^2-2ab+b^2=(a-b)^2

hence

ANSWER=

(5x^2-6y^2)