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

X=-11 or x=1
X=-11 or x=-1
X=-8 or X=-2
X=-8 or X= 2

x=-8          x=2

Step-by-step explanation:

x^2 +6x-6 = 10

Subtract 10 from each side

x^2 +6x-6-10 = 10-10

x^2 +6x-16 = 0

Factor

What 2 numbers multiply to -16 and add to +6

8*-2 = 16

8-2 =6

(x+8) (x-2) =0

Using the zero product property

x+8 = 0    x-2 =0

x=-8          x=2

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

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step-by-step explanation: