Question

x⁴-x²y²-72y⁴ factorise the following by middle term splitting​

Answer 1

Step-by-step explanation:

x^4-9x^2y^2+8x^2y^2-72y^4

x^2(x^2-9y^2)+8y^2(x^2-9y^2)

(x^2-9y^2)(x^2+8y^2)

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Answer 2

x⁴-x²y²-72y⁴

x⁴-9x²y²+ 8x²y² -72y⁴

x²(x²-9 y²)+ 8y²(x²-9 y²)

(x²-9 y²)(x²+8 y²)
(x-3y)(x+3y) (x²+8 y²)

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