Question

Given h(x)= – 2x² + 4x – 7, what is the value of h(3)?

Answer 1

Explanation:

The answer is -13.

Using the order of operations and substitution, we write out the problem like this:

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

Compute the exponent first, -2(9), then multiply 4(3)=12 and keep the -7.

-2(9) is -18, so you can simplify the problem to: -18 + 12 - 7. From there you add/subtract. -18 + 5 = -13.

Answer 2

-13

Explanation:

h(3) = -2
`(3)^(2)` + 4(3) -7

h(3) = -2(9) +4(3) -7

h(3) = -18 + 12 -7

h(3) = -13