Question

Which of the following are solutions to the following equation?

4x^2-100=0.
Check all that apply.

A. 5
B. -10
C. -5
D. 10

Answer 1

Answer:x=5 or x=−5

Explanation:

4x^2−100=0

Step 1: Add 100 to both sides.

4x^2−100+100=0+100

4x^2=100

Step 2: Divide both sides by 4.

4x^2/4=100/4

x^2=25

Step 3: Take square root.

x=±√25

x=5 or x=−5

Answer:

x=5 or x=−5