Question

The value of the polynomial 7x4 + 3x2 - 4, when x= -2 is:
•100
•110
•120
•130​

Answer 1

I assume the polynomial is 7x⁴ + 3x² - 4

Using (-2) instead of x

7(-2)⁴ + 3(-2)² - 4

= 7(16) + 3(4) - 4

= 112 + 12 - 4

= 120.

Answer 2

Answer:

the correct option is 120