College Algebra CLEP Prep Practice Exam

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Prepare for the College Algebra CLEP exam with our comprehensive quiz. Our engaging questions, hints, and detailed explanations will help ensure you're ready to ace your test and earn college credit faster!

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

  1. -16

  2. 12

  3. 32

  4. -12

The correct answer is: -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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