Answer:
D. -5
Step-by-step explanation:
x⁴ + 3x³ + x² - 1; x = -2
(-2)⁴ + 3(-2)³ + (-2)² - 1
16 + 3(-8) + 4 - 1 [(-2 × -2 × -2 × -2 = 16), (-2 × -2 × -2 = -8)]
16 - 24 + 4 - 1
-8 + 4 - 1
-4 - 1
-5
So, the value of this polynomial if x = -2 is equal to -5.
I hope this helps.
