Solve for x: √(x + 5) = 4

A x = 11

B x = 21

C x = 9

D x = −1

✓ Correct Answer: Option A

Square both sides: x + 5 = 16 → x = 11. Check: √(16) = 4. ✓

💡 Why is A) the correct answer?

The correct answer to the question "Solve for x: √(x + 5) = 4" is Option A: x = 11.

The other options — B) x = 21, C) x = 9, D) x = −1 — are incorrect for this SAT Exam Prep question. As explained above: Square both sides: x + 5 = 16 → x = 11. Check: √(16) = 4. ✓

📚 About This SAT Exam Prep Practice Question

This 1-level SAT Exam Prep question from the Math (No Calculator) topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free SAT Exam Prep practice test or use flashcards for spaced repetition review.

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Solve for x: √(x + 5) = 4

✓ Correct Answer: Option A

📚 About This SAT Exam Prep Practice Question

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