What are the solutions of x2 + 6x-6 = 10?

OX=-11 or x = 1

OX=-11 or x=-1

O X=-8 or X=-2

O X = -8 or x=2

x = 1, or x = - 7

Obviously, the true answer is not in the options given.

Step-by-step explanation:

x² + 6x - 6 = 10

The above equation can not be factorized, hence the use of Almighty Formula.

x = [-b + - √b² - 4ac] / 2a

Where a = 1, b = 6, c = - 6

x = [-6 + - √6² - (4*1*-6) ] / 2*1

x = [-6 + - √36 - (-24) ] / 2

x = [-6 + - √36 + 24] / 2

x = [-6 + - √60] / 2

x = [-6 + - 7.75] / 2

x = [-6 + 7.75] / 2, or x = [-6 - 7.75] / 2

x = 1.75/2, or x = - 13.75/2

x = 0.875, or x = - 6.875

Approximately

x = 1, or x = - 7