Question

Find p(-1) and p(1) in the polynomial:p(X)=2x3+5x2-7x13​

Answer 1

Answer:

Given,

p(x) = 2x³+5x²-7x+13

p(1) = 2(1)³+5(1)²-7(1)+13

= 2(1)+5(1)-7+13

= 2+5-7+13

= 20-7

= 13

p(-1) = 2(-1)³+5(-1)²-7(-1)+13

= 2(-1)+5(1)+7+13

= -2+5+7+13

= 25-2

= 23

Therefore, P(1) = 13 and p(-1) = 23.

Understand Properly.

You will get the Answer.

Hope it Helps You.

Please Mark me as Brainliest + 50 Thanks ❤

Answer 2

Answer:

p(-1) = 2(-1)³ + 5(-1)² - 7(-1) + 13

= 2(-1) + 5 + 7 + 13

= (-2) + 25

= 23

p(1) = 2(1)³ + 5(1)² - 7(1) + 13

= 2 + 5 - 7 + 3

= 3

So, p(-1) = 23 and p(1) = 3.