Question

If h(x) = 2x4 - 4x2 - 2x, then h(3)= ? A) -6 B) 120 C) 192 D) 1146 E) 1434

Answer 1

The value of h(3) is 120 ⇒ B

Step-by-step explanation:

To find the value of f(x) at x = a, do that

• Substitute x by a
• Find the value of f(a)

∵ $h(x)=2x^{4}-4x^{2}-2x$

- To find h(3) substitute x by 3

∴ $h(3)=2(3)^{4}-4(3)^{2}-2(3)$

∵ $(3)^{4}$ = 81

∵ (3)² = 9

- Substitute them in the function above

∴ h(3) = 2(81) - 4(9) - 2(3)

∴ h(3) = 162 - 36 - 6

∴ h(3) = 120

The value of h(3) is 120

Learn more:

You can learn more about the functions in brainly.com/question/9006189

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