Question

Given f(x) = 2x³ 3x and g(x) = -3x2 +1, what is the value of h(3) where h(x) = (f+g)(x)?

O 54
O-45
O 18
O 19

Answer 1

19

Explanation:

Operations of functions:

h(x) = f(z) + g(z)

h(x) = (2z³ - 3z) + (-3z² + 1)

Simplify or expand:

(2z³ - 3z) + (-3z² + 1)

Determine the sign

2z³ - 3z - 3z² + 1

Rewrite the expression

2z³ - 3z² - 3z + 1

Calculate:

Substitute z = 3 into

2z³ - 3z² - 3z + 1

Substitute

2 × 3³ - 3 × 3² - 3 × 3 + 1

Calculate

19

HOPE THIS HELPS AND HAVE A NICE DAY <3