(2x-7)(2x+1)=0

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Solution for (2x-7)(2x+1)=0 equation: 


Simplifying
(2x + -7)(2x + 1) = 0

Reorder the terms:
(-7 + 2x)(2x + 1) = 0

Reorder the terms:
(-7 + 2x)(1 + 2x) = 0

Multiply (-7 + 2x) * (1 + 2x)
(-7(1 + 2x) + 2x * (1 + 2x)) = 0
((1 * -7 + 2x * -7) + 2x * (1 + 2x)) = 0
((-7 + -14x) + 2x * (1 + 2x)) = 0
(-7 + -14x + (1 * 2x + 2x * 2x)) = 0
(-7 + -14x + (2x + 4x2)) = 0

Combine like terms: -14x + 2x = -12x
(-7 + -12x + 4x2) = 0

Solving
-7 + -12x + 4x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-1 + -2x)(7 + -2x) = 0


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

Simplifying
-1 + -2x = 0

Solving
-1 + -2x = 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 + -2x = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -2x = 0 + 1
-2x = 0 + 1

Combine like terms: 0 + 1 = 1
-2x = 1

Divide each side by '-2'.
x = -0.5

Simplifying
x = -0.5

Subproblem 2
Set the factor '(7 + -2x)' equal to zero and attempt to solve:

Simplifying
7 + -2x = 0

Solving
7 + -2x = 0

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

Add '-7' to each side of the equation.
7 + -7 + -2x = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -2x = 0 + -7
-2x = 0 + -7

Combine like terms: 0 + -7 = -7
-2x = -7

Divide each side by '-2'.
x = 3.5

Simplifying
x = 3.5
Solution
x = {-0.5, 3.5}

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