0=-x^2-10x-25

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Solution for 0=-x^2-10x-25 equation:


Simplifying
0 = -1x2 + -10x + -25

Reorder the terms:
0 = -25 + -10x + -1x2

Solving
0 = -25 + -10x + -1x2

Solving for variable 'x'.

Combine like terms: 0 + 25 = 25
25 + 10x + x2 = -25 + -10x + -1x2 + 25 + 10x + x2

Reorder the terms:
25 + 10x + x2 = -25 + 25 + -10x + 10x + -1x2 + x2

Combine like terms: -25 + 25 = 0
25 + 10x + x2 = 0 + -10x + 10x + -1x2 + x2
25 + 10x + x2 = -10x + 10x + -1x2 + x2

Combine like terms: -10x + 10x = 0
25 + 10x + x2 = 0 + -1x2 + x2
25 + 10x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
25 + 10x + x2 = 0

Factor a trinomial.
(5 + x)(5 + x) = 0

Subproblem 1

Set the factor '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5

Subproblem 2

Set the factor '(5 + x)' equal to zero and attempt to solve: Simplifying 5 + x = 0 Solving 5 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + x = 0 + -5 x = 0 + -5 Combine like terms: 0 + -5 = -5 x = -5 Simplifying x = -5

Solution

x = {-5, -5}

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