Set 3: Quadratic Equations (Beginner)

**Choice D is the best answer.** x squared = 72/2 = 36. x = 6

Explanation

Answer: D

PROBLEM

Solve: 2x squared = 72. Find the positive value of x.

A.

12

B.

8

C.

5

D.

6

✓ Correct

Detailed Explanation

Choice D is the best answer. x squared = 72/2 = 36. x = 6

Why others are wrong:

A: 12 is incorrect because it does not satisfy the equation.

B: 8 is incorrect because it does not satisfy the equation.

C: 5 is incorrect because it does not satisfy the equation.