Evaluate (x + 2y) (x^2- 2xy + 4y^2) by using suitable identity.
Answers
Answered by
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 ;)
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
13
okay so the answer is.
(x+2y) (x-2y)^2 = (x^3-2y^3)
(x+2y) (x-2y)^2 = (x^3-2y^3)
Similar questions