Question

2(-2)³+(-2)²-5(-2)+2 any one knows this

Answer 1

Hope it helps u.....

Answer 2

Answer:

x+2=0

×=-2

P(x)=x³ + ax² + x + 30

P(-2)=(-2)³ + a(-2)² + (-2) + 30

0 = -8 + a(4) -2 + 30

0-8 =a(4) -2 + 30

-8 =4a - 2 + 30

-8 - 2 =4a + 30

-16 =4a + 30

-16 + 30 =4a

14 =4a

14/4= a

7/2=a

a = 7/2