(x-7)*(x-8)=0

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Solution for (x-7)*(x-8)=0 equation: 


Simplifying
(x + -7)(x + -8) = 0

Reorder the terms:
(-7 + x)(x + -8) = 0

Reorder the terms:
(-7 + x)(-8 + x) = 0

Multiply (-7 + x) * (-8 + x)
(-7(-8 + x) + x(-8 + x)) = 0
((-8 * -7 + x * -7) + x(-8 + x)) = 0
((56 + -7x) + x(-8 + x)) = 0
(56 + -7x + (-8 * x + x * x)) = 0
(56 + -7x + (-8x + x2)) = 0

Combine like terms: -7x + -8x = -15x
(56 + -15x + x2) = 0

Solving
56 + -15x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(7 + -1x)(8 + -1x) = 0


Subproblem 1
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

Subproblem 2
Set the factor '(8 + -1x)' equal to zero and attempt to solve:

Simplifying
8 + -1x = 0

Solving
8 + -1x = 0

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

Add '-8' to each side of the equation.
8 + -8 + -1x = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -1x = 0 + -8
-1x = 0 + -8

Combine like terms: 0 + -8 = -8
-1x = -8

Divide each side by '-1'.
x = 8

Simplifying
x = 8
Solution
x = {7, 8}

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