Question

Solve the following equation algebraically: 4 x squared = 100 a. Plus-or-minus 0.2 b. Plus-or-minus 5 c. Plus-or-minus 12.5 d. Plus-or-minus 10

Answer 1

Answer:

x = ±5

b. Plus-or-minus 5

Step-by-step explanation:

4 x^2 = 100

Solving for x:

Divide each side by 4.

4x^2 /4 = 100/4

x^2 = 25

Taking the square root of each side:

x = ±√25

x = ±5