Verified answer

Answer:

Find the value of P(x)=x³-x²+3x-4

a. P(1)= (1)³-(1)²+3(1)-4

P(1)= 1-1+3-4

P(1)= -1

b. P(-2)= (-2)³-(-2)²+3(-2)-4

P(-2)= -8-4-6-4

P(-2)= -22