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

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Solution for (x-2)(5x+1)=0 equation: 


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

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

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

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

Combine like terms: -10x + 1x = -9x
(-2 + -9x + 5x2) = 0

Solving
-2 + -9x + 5x2 = 0

Solving for variable 'x'.

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


Subproblem 1
Set the factor '(-1 + -5x)' equal to zero and attempt to solve:

Simplifying
-1 + -5x = 0

Solving
-1 + -5x = 0

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

Add '1' to each side of the equation.
-1 + 1 + -5x = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -5x = 0 + 1
-5x = 0 + 1

Combine like terms: 0 + 1 = 1
-5x = 1

Divide each side by '-5'.
x = -0.2

Simplifying
x = -0.2

Subproblem 2
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
Solution
x = {-0.2, 2}

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