Question

If p(x)=2x^3-5x^2+7x-7 ; p(2)=

Answer 1

Answer:

3

Step-by-step explanation:

p(x) = 2x^3 - 5x^2 + 7x - 7

p(2) = 2*2^3 - 5*2^2 + 7*2 - 7

p(2) = 2*8 - 5*4 + 14 - 7

p(2) = 16 - 20 + 7

p(2) = 16 - 13

p(2) = 3

Answer 2

3

Answer:

$p(x) = 2 ({x}^{3} )- 5 {x}^{2} + 7x - 7 \\ p(2) = 2 ({2}^{3} ) - 5 ({2}^{2}) + 7 \times 2 - 7 \\ = 2 \times 8 - 5 \times 4 + 7 \times 2 - 7 \\ = 16 - 20 + 14 - 7 \\ = 30 - 27 \\ = 3$