Question

Factorise
64x²y² - 1​

Answer 1

Step-by-step explanation:

tkbits is right: (x^2 + y^2)^2 = x^4 + 2 x^2 y^2 + y^4, so adding -64 x^2 y^2 to both sides gives (x^2 + y^2)^2 - 64 x^2 y^2 = x^4 + y^4 - 62 x^2 y^2.

Answer 2

Answer:

Refer the attachment

Step-by-step explanation:

Hope this helps you

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