(2x+5)(2x-6)=0

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Solution for (2x+5)(2x-6)=0 equation: 


Simplifying
(2x + 5)(2x + -6) = 0

Reorder the terms:
(5 + 2x)(2x + -6) = 0

Reorder the terms:
(5 + 2x)(-6 + 2x) = 0

Multiply (5 + 2x) * (-6 + 2x)
(5(-6 + 2x) + 2x * (-6 + 2x)) = 0
((-6 * 5 + 2x * 5) + 2x * (-6 + 2x)) = 0
((-30 + 10x) + 2x * (-6 + 2x)) = 0
(-30 + 10x + (-6 * 2x + 2x * 2x)) = 0
(-30 + 10x + (-12x + 4x2)) = 0

Combine like terms: 10x + -12x = -2x
(-30 + -2x + 4x2) = 0

Solving
-30 + -2x + 4x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-15 + -1x + 2x2) = 0

Factor a trinomial.
2((-5 + -2x)(3 + -1x)) = 0

Ignore the factor 2.

Subproblem 1
Set the factor '(-5 + -2x)' equal to zero and attempt to solve:

Simplifying
-5 + -2x = 0

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

Combine like terms: -5 + 5 = 0
0 + -2x = 0 + 5
-2x = 0 + 5

Combine like terms: 0 + 5 = 5
-2x = 5

Divide each side by '-2'.
x = -2.5

Simplifying
x = -2.5

Subproblem 2
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
Solution
x = {-2.5, 3}

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