Question

if p(x) =x3+4x-5
find p(1)and p(-1)​

Answer 1

Answer:

by rits

Step-by-step explanation:

p(x)=x²-4x+3

so,

p(2)= 2²-4×2+3= 4-8+3= (-1)

p(-1)= (-1)²-4(-1)+3= 1+4+3= 8

p(1/2)= (1/2)²-4(1/2)+3= (1/4)-2+3 =1/4+1 =5/4

now,

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

=(-1)+8-5/4

=7-5/4

=28-5/4

=23/4

Answer 2

Step-by-step explanation:

p(2)=2^3+4×2-5

=8+8-5=11