College Algebra CLEP Prep Practice Exam

Question: 1 / 410

What is the value of 8x + 4x2 when x = -2?

-16

12

32

-12

When substituting -2 for x, the equation becomes 8(-2) + 4(-2)^2. Simplifying this, we get -16 + 4(4) = -16 + 16 = 0. Therefore, none of the given choices are correct. Option D is the closest answer, with a value of -12, but it is still not accurate. It is important to pay attention to the signs and to properly calculate exponents when solving equations.

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