(x-10)(x+3)=0

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Solution for (x-10)(x+3)=0 equation: 


Simplifying
(x + -10)(x + 3) = 0

Reorder the terms:
(-10 + x)(x + 3) = 0

Reorder the terms:
(-10 + x)(3 + x) = 0

Multiply (-10 + x) * (3 + x)
(-10(3 + x) + x(3 + x)) = 0
((3 * -10 + x * -10) + x(3 + x)) = 0
((-30 + -10x) + x(3 + x)) = 0
(-30 + -10x + (3 * x + x * x)) = 0
(-30 + -10x + (3x + x2)) = 0

Combine like terms: -10x + 3x = -7x
(-30 + -7x + x2) = 0

Solving
-30 + -7x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-3 + -1x)(10 + -1x) = 0


Subproblem 1
Set the factor '(-3 + -1x)' equal to zero and attempt to solve:

Simplifying
-3 + -1x = 0

Solving
-3 + -1x = 0

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

Add '3' to each side of the equation.
-3 + 3 + -1x = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -1x = 0 + 3
-1x = 0 + 3

Combine like terms: 0 + 3 = 3
-1x = 3

Divide each side by '-1'.
x = -3

Simplifying
x = -3

Subproblem 2
Set the factor '(10 + -1x)' equal to zero and attempt to solve:

Simplifying
10 + -1x = 0

Solving
10 + -1x = 0

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

Add '-10' to each side of the equation.
10 + -10 + -1x = 0 + -10

Combine like terms: 10 + -10 = 0
0 + -1x = 0 + -10
-1x = 0 + -10

Combine like terms: 0 + -10 = -10
-1x = -10

Divide each side by '-1'.
x = 10

Simplifying
x = 10
Solution
x = {-3, 10}

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