Math, asked by jsmnhssn9, 9 months ago

simplify (x+4y)power3 -(x-4y)power3

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Answered by ItzCupcake

4

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Answered by dilliprasaddhakal528

2

(x+4y)³-(x-4y)³

= (x+4y-(x-4y))[(x+4y)²+(x+4y).(x-4y)+(x-4y)²]

= (x+4y-x+4y)(x²+8xy+16y²+x²-16y²+x²-8xy+16y²)

= 8y(3x²+16y²) Ans.

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