(x-2)(-x-5)=0

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Solution for (x-2)(-x-5)=0 equation:


Simplifying
(x + -2)(-1x + -5) = 0

Reorder the terms:
(-2 + x)(-1x + -5) = 0

Reorder the terms:
(-2 + x)(-5 + -1x) = 0

Multiply (-2 + x) * (-5 + -1x)
(-2(-5 + -1x) + x(-5 + -1x)) = 0
((-5 * -2 + -1x * -2) + x(-5 + -1x)) = 0
((10 + 2x) + x(-5 + -1x)) = 0
(10 + 2x + (-5 * x + -1x * x)) = 0
(10 + 2x + (-5x + -1x2)) = 0

Combine like terms: 2x + -5x = -3x
(10 + -3x + -1x2) = 0

Solving
10 + -3x + -1x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(2 + -1x)(5 + x) = 0

Subproblem 1

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

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 = {2, -5}

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