Math, asked by jainhgmailcom2891, 1 year ago

Evaluate (x + 2y) (x^2- 2xy + 4y^2) by using suitable identity.

Answers

Answered by DhanyaDA
88
Hi friend!!

Given,

(x+2y)(x²-2xy+4y²)

=(x+2y)(x²-(x)(2y)+(2y)²)

We know that (a+b)(a²+b²-ab)=a³+b³

=x³+(2y)³

=x³+8y³

I hope this will help you ;)
Answered by rehanafirozsf
13
okay so the answer is.


(x+2y) (x-2y)^2 = (x^3-2y^3)
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