Question

if p (X) = x^3 - 4x +3 evaluate p(2) - p (-1) + p (1/2)​

Answer 1

Answer:

3,6,9/8

Step-by-step explanation:

p(2)=2^3-4*2+3

8-8+3

3

p(-1)=-1^3-4*-1+3

-1+4+3

6

p(1/2)=1/2^3-4*1/2+3

1/8-2+3

9/8

Answer 2

Answer:

-15/8

Step-by-step explanation:

putting x=2

p(2) = (2)^3 -4(2) + 3 = 8-8+3 = 3

putting x= -1

p(-1) = (-1)^3 - 4(-1) +3 = -1+4+3 = 6

putting x= 1/2

p(1/2) = (1/2)^3 -4(1/2) +3 = 1/8 -2 +3 = 1-16+24 /8= 9/8

p(2) - p(-1) + p(1/2)

= 3 - 6 + 9/8

= -3+9/8

= -24+9/8

= -15/8