Question

What is the output, or y-value, when you input= -2 into the function:
y=x^4-5x^2+40
y=

Answer 1

y = 36

Explanation:

substitute the input value x = - 2 into the equation

y =
`(-2)^(4)` - 5(- 2)² + 40

= 16 - 5(4) + 40

= 16 - 20 + 40

= - 4 + 40

= 36 ← output value