Question

11) Verify x3+ y3 = ( x + y) (x2- xy + y2) using this, factorise
a) 8(x + y)3 + 27(x - y)3
b) a 6 + 8b6.​

Answer 1

Answer:

(d) Now, (x+ y)3 – (x3 + y3) = (x + y) – (x + y)(x2– xy + y2) [using identity, a3 + b3 = (a + b)(a2 -ab+ b2)] = (x+ y)[(x+ y)2 -(x2 -xy+ y2)] = (x+ ... More.

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