Question

B ( a little 3 on the top) - 2ac + d (a little two on the top) evaluate this polynomial if a=2,b= -3,c= 4 and d = -5.

Answer 1

b³ - 2ac + d²

a = 2

b = -3

c = 4

d = -5

In order to evaluate the given polynomial, we need to replace each letter by its corresponding value:

b³ - 2ac + d²

(-3)³ - 2 * 2 * 4 + (-5)²

(-3) * (-3) * (-3) - 4 * 4 + (-5) * (-5)

9 * (-3) - 16 + 25 , because the product of two negative numbers equals a positive number

-27 - 16 + 25

-27 + 9

-18