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Home > A2C > Chapter 2 > Lesson 2.2.2 > Problem 2-140

2-140.
  1. For the function h(x) = −3x2 − 11x + 4, find the value of each expression below. Homework Help ✎

    1. h(0)

    2. h(2)

    3. h(−1)

    4. For what value(s) of x does h(x) = 0?

Substitute 0 for x and simplify.

h(0) = −3(0)2 − 11(0) + 4

h(0) = 4

See part (a).

h(2) = −30

Be careful of the signs when multiplying negative numbers.

h(−1) = 12

Remember how to multiply fractions.

0 = −3x2 − 11x + 4

Start with the diamond problem and factor using a generic rectangle.