Given h(x) = 10x +2x2, find h(-2)
just replace every x with -2
h(-2) = 10(-2) + 2(-2)^2 = _____
To find h(-2), we need to substitute -2 into the function h(x) = 10x + 2x^2.
Replacing x with -2:
h(-2) = 10(-2) + 2(-2)^2
Simplifying:
h(-2) = -20 + 2(4)
h(-2) = -20 + 8
h(-2) = -12
Therefore, h(-2) = -12.
To find the value of h(-2), we need to substitute -2 into the equation for x in the function h(x).
The given function is h(x) = 10x + 2x^2.
Step 1: Replace x with -2 in the equation.
h(-2) = 10(-2) + 2(-2)^2
Step 2: Simplify the equation.
h(-2) = -20 + 2(4)
h(-2) = -20 + 8
h(-2) = -12
Therefore, h(-2) is equal to -12.