Question

Find the value of n³+5n²+5n-2 for n = -2

Answer 1

n=-2

${n}^{2} + 5 {n}^{2} + 5n - 2$

$( { - 2})^{2} + 5( {n})^{2} + 5( - 2) - 2$

$- 4 + 5 {n}^{2} + 10 - 2$

$- 6 + 15 {n}^{2}$

$- 9 {n}^{2}$

Answer 2

Answer:

= -48

Step-by-step explanation:

=n^3+5n^2+5n-2

=-2^3+5(-2)^2+5(-2)-2

=(-2)(-2)(-2)+5(-4)+(-10)-2

=-8+(-20)+(-20)

=-8-20-20

=-48

Hope it may help you