Solve for x:
x^2-20 x = -125
Add 100 to both sides:
x^2-20 x+100 = -25
Write the left hand side as a square:
(x-10)^2 = -25
Take the square root of both sides:
x-10 = 5 i or x-10 = -5 i
Add 10 to both sides:
x = 10+5 i or x-10 = -5 i
Add 10 to both sides:
Answer: |x = 10+5 i or x = 10-5 i
Solve for x:
x^2-20 x = -125
Add 100 to both sides:
x^2-20 x+100 = -25
Write the left hand side as a square:
(x-10)^2 = -25
Take the square root of both sides:
x-10 = 5 i or x-10 = -5 i
Add 10 to both sides:
x = 10+5 i or x-10 = -5 i
Add 10 to both sides:
Answer: |x = 10+5 i or x = 10-5 i