Question

(iii) 81x4 – 16y4 do factorise
plz do it urgently
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Answer 1

Answer:

(9x²+4y²)(3x+2y)(3x-2y)

Step-by-step explanation:

81x⁴-16y⁴

(9x²)²-(4y²)²

(9x²+4y²)(9x²-4y²).

(9x²+4y²){(3x)²-(2y)²}

(9x²+4y²)(3x+2y)(3x-2y)

I hope it will help you