Advertisements
Advertisements
Question
Factorise the following:
8x3 + 125y3
Sum
Solution
8x3 + 125y3 = (2x)3 + (5y)3
∴ a3 + b3 = (a + b) (a2 – ab + b2)
= (2x + 5y) [(2x)2 – (2x)(5y) + (5y)2]
= (2x + 5y)2 (4x2 – 10xy + 25y2)
shaalaa.com
Is there an error in this question or solution?
