x(x+10)-1200=0

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Solution for x(x+10)-1200=0 equation:


Simplifying
x(x + 10) + -1200 = 0

Reorder the terms:
x(10 + x) + -1200 = 0
(10 * x + x * x) + -1200 = 0
(10x + x2) + -1200 = 0

Reorder the terms:
-1200 + 10x + x2 = 0

Solving
-1200 + 10x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-40 + -1x)(30 + -1x) = 0

Subproblem 1

Set the factor '(-40 + -1x)' equal to zero and attempt to solve: Simplifying -40 + -1x = 0 Solving -40 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + -1x = 0 + 40 Combine like terms: -40 + 40 = 0 0 + -1x = 0 + 40 -1x = 0 + 40 Combine like terms: 0 + 40 = 40 -1x = 40 Divide each side by '-1'. x = -40 Simplifying x = -40

Subproblem 2

Set the factor '(30 + -1x)' equal to zero and attempt to solve: Simplifying 30 + -1x = 0 Solving 30 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + -1x = 0 + -30 Combine like terms: 30 + -30 = 0 0 + -1x = 0 + -30 -1x = 0 + -30 Combine like terms: 0 + -30 = -30 -1x = -30 Divide each side by '-1'. x = 30 Simplifying x = 30

Solution

x = {-40, 30}

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