Zeeshan I. answered 04/20/19
Tutor
New to Wyzant
The given equation is
4x2 - 100 = 0
Add 100 to both sides:
4x2 - 100 + 100 = 0 + 100
4x2 = 100
Divide both sides by 4:
4x2/4 = 100/4
x2 = 25
Take the square root on both sides:
√x2 = ± √25
x = ±5
So the roots of the equation 4x2 - 100 = 0 are x = 5 and x = -5.