(2x-1)(7x+8)=0

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Solution for (2x-1)(7x+8)=0 equation: 


Simplifying
(2x + -1)(7x + 8) = 0

Reorder the terms:
(-1 + 2x)(7x + 8) = 0

Reorder the terms:
(-1 + 2x)(8 + 7x) = 0

Multiply (-1 + 2x) * (8 + 7x)
(-1(8 + 7x) + 2x * (8 + 7x)) = 0
((8 * -1 + 7x * -1) + 2x * (8 + 7x)) = 0
((-8 + -7x) + 2x * (8 + 7x)) = 0
(-8 + -7x + (8 * 2x + 7x * 2x)) = 0
(-8 + -7x + (16x + 14x2)) = 0

Combine like terms: -7x + 16x = 9x
(-8 + 9x + 14x2) = 0

Solving
-8 + 9x + 14x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-8 + -7x)(1 + -2x) = 0


Subproblem 1
Set the factor '(-8 + -7x)' equal to zero and attempt to solve:

Simplifying
-8 + -7x = 0

Solving
-8 + -7x = 0

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

Add '8' to each side of the equation.
-8 + 8 + -7x = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -7x = 0 + 8
-7x = 0 + 8

Combine like terms: 0 + 8 = 8
-7x = 8

Divide each side by '-7'.
x = -1.142857143

Simplifying
x = -1.142857143

Subproblem 2
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
Solution
x = {-1.142857143, 0.5}

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