Solve the equation. Use a calculator where appropriate. If the answer is irrational, round to the nearest hundredth.
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B) 4
D) -4

Question

Solve the equation. Use a calculator where appropriate. If the answer is irrational, round to the nearest hundredth.
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B) 4 
D) -4

Quizplus · Accepted Answer

The equation is already solved for x. x = 4. Therefore, the answer is choice B. The equation given is:

$3x^2 -12 = 0$

Adding 12 to both sides, we get:

$3x^2 = 12$

Dividing both sides by 3, we get:

$x^2 = 4$

Taking the square root of both sides, we get:

$x = \pm 2$

Since the question asks for rounding to the nearest hundredth, we can see that option B is the only whole number choice, and thus is also the correct rounded answer.

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