What are the solutions of x squared + 6 x minus 6 = 10?
x=-11 or x=1
x=-11 or x=-1
x=-8 or x=-2
x=-8 or x=2

x=-8 or x=2

Step-by-step explanation:

x² + 6x - 6 = 10

x² + 6x - 6 - 10 = 0

x² + 6x - 16 = 0

= (x + 8)(x - 2)

x + 8 = 0

x = -8

x - 2 = 0

x = 2

step-by-step explanation:

the first 5 right here the next 5 i will upload as separate question

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18