Question

factorise completely-16x4 - 81y4
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Answer 1

Step-by-step explanation:

$\huge\underbrace\mathcal\purple{ AnSwEr }$

(-16-81)-4(x+y)

Answer 2

Answer:

16x⁴-81y⁴

(4x²)²-(9y²)²

(4x²-9y²)(4x²+9y²)

(2x-3y)(2x+3y)(4x²+9y²)

(✓2x-✓3y)(✓2x+✓3y)(2x+3y)(4x²+9y²)

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