Question

11.The value of the polynomial 7x⁴ + 3x² - 4, when x = - 2 is:​

Answer 1

Answer:

7(-2) ^4+3(-2) ^2-4

7x16+3x4-4

112+12-4

124-4

120

Answer 2

Answer:

Value of polynomial is 120.

Step-by-step explanation:

7x⁴ + 3x² - 4

If x = -2 then,

7 (-2)⁴ + 3(-2)² - 4

7(16) + 3(4) - 4

112 + 12 - 4

124 - 4

= 120