Question

Calculate this
k^3+k^2+k =??​

Answer 1

Answer:

k(k^2+k+1)=0

k^2+k+1=0

Answer 2

Answer:

${k}^{3} + {k}^{2} + k$

${k}^{2} (k + 1) + 1(k + 1)$

$({k}^{2} + 1)(k + 1) = 0$

$k + 1 = 0$

$k = - 1$

or,

${k}^{2} + 1 = 0$

${k}^{2} = - 1$

K= ±√(-1) = 1 or - 1