Question

let the value of p= -2
solve this questions...
$- 2p ^{3} - 3p ^{3} + 4p + 7$
Let the value of x = -1
$x ^{3} + 2x + 1$
Let the value of x =2
$6x + 5(x - 2)$
Let the value of x =3
$3x - 5 - x + 9$
Let the value of a = -1
$3a + 5 - 8a+ 1$
Let the value of a = -1 and value of b= -2
$2a - 2b - 4 - 5 + a$
please solve this questions......​

Answer 1

1) let the value of x =-2

=-2p³-3p³+4p+7

=-2(-2)³-3(-2)³+4(-2)+7

=-2(-8)-3(-8)-8+7

=16+24-8+7

=40-1

=39

2) let the value of x=-1

=x³+2x+1

=(-1)³+2(-1)+1

=-1-2+1

=-3+1

=-2

3) let the value of x=2

=6x+5(x-2)

=6(2)+5(2-2)

=12+5(0)

=12+0

=12

4) let the vlaue of x=3

=3x-5-x+9

= 3(3)-5-3+9

=9-5-3+9

=10

5) let the value of a=-1

=3a+5-8a+1

=3(-1)+5-8(a)+1

=-3+5+8+1

=11

6) let the value of a =-1 and b=-2

=2a-2b-4-5+a

=2(-1)-2(-2)-4-5+(-1)

=-2+4-4-5-1

=-2-5-1

=-8