Question 6 Answer & Explanation - SAT Advanced Math

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advanced-math

What is the solution set for $x^2 < -4$ ?

Empty set (No solution)

All real numbers

$x < -2$

$-2 < x < 2$

Choice A is the correct answer.

$x^2$ must be non-negative ( $x^2 \geq 0$ ).
It is impossible for a non-negative number to be less than a negative number (-4).
Therefore, there is no solution.

Choice B is incorrect. Choice C is incorrect. Choice D is incorrect.

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