Mathematics
Factorise:
x5 + x2
Factorisation
2 Likes
Answer
Given,
⇒ x5 + x2
⇒ x2(x3 + 1)
⇒ x2[(x)3 + (1)3]
By using the identity,
a3 + b3 = (a + b)(a2 - ab + b2)
⇒ x2(x + 1)(x2 - x × 1 + 12)
⇒ x2(x + 1)(x2 - x + 1).
Hence, x5 + x2 = x2(x + 1)(x2 - x + 1).
Answered By
1 Like