Solve. x^2-6x-7=0?

Answer 1

(x - 7)(x + 1) = 0
x = 7 , x = - 1

Answer 2

Simplifying
x^2 + -6x + -7 = 0

Reorder the terms:
-7 + -6x + x^2 = 0

Solving
-7 + -6x + x^2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-1 + -1x)(7 + -1x) = 0

Subproblem 1
Set the factor '(-1 + -1x)' equal to zero and attempt to solve:

Simplifying
-1 + -1x = 0

Solving
-1 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + 1 + -1x = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -1x = 0 + 1
-1x = 0 + 1

Combine like terms: 0 + 1 = 1
-1x = 1

Divide each side by '-1'.
x = -1

Simplifying
x = -1
Subproblem 2
Set the factor '(7 + -1x)' equal to zero and attempt to solve:

Simplifying
7 + -1x = 0

Solving
7 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-7' to each side of the equation.
7 + -7 + -1x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -1x = 0 + -7
-1x = 0 + -7

Combine like terms: 0 + -7 = -7
-1x = -7

Divide each side by '-1'.
x = 7

Simplifying
x = 7
Solution
x = {-1, 7}

Answer 3

(x-7)(x+1)=0
by zero property
x-7=0 x =+7 or
x+1=0 x = -1

Answer 4

Factor:

(x-7)(x+1) = 0
x-7 = 0 and x+1 = 0
x = -1, 7

Best of luck!