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5

Set 1: Quadratic Equations (Beginner)

Explanation

Answer: D

PROBLEM

Solve: 1x squared = 9. Find the positive value of x.

Solve: 1x squared = 9. Find the positive value of x.

A.

1

B.

2

C.

5

D.

3

✓ Correct

Detailed Explanation

Choice D is the best answer. x squared = 9/1 = 9. x = 3

Why others are wrong:
A: 1 is incorrect because it does not satisfy the equation.
B: 2 is incorrect because it does not satisfy the equation.
C: 5 is incorrect because it does not satisfy the equation.
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