Question

Solve for x in the equation x2 - 12x+ 36 = 90

Answer 1

6 + 3
`√(10\\)` or 6 - 3
`√(10\\)`

Explanation:

x^2 - 12x + 36 = 90

x^2 - 12x - 54 = 0

x =
`\frac{-b +/- \sqrt{b^(2) + 4ac }}{2a}`

a = 1, b= -12, c= -54

6 + 3
`√(10\\)` or 6 - 3
`√(10\\)`