Question

use identities to factorise the following​

Answer 1

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➡Factories of , X⁴-18x²y² + 81y⁴.

= x⁴-18x²y²+81y⁴.

= (x²)²-2× x² × 9y² + (9y²)²

= (x²-y²)².

➡Hopes its helps u .

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Answer 2

Step-by-step explanation:

ur ans is (x^2-9y^2)^2 hope it helps u..........