(x+7)(2x-9)=0

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Solution for (x+7)(2x-9)=0 equation: 


Simplifying
(x + 7)(2x + -9) = 0

Reorder the terms:
(7 + x)(2x + -9) = 0

Reorder the terms:
(7 + x)(-9 + 2x) = 0

Multiply (7 + x) * (-9 + 2x)
(7(-9 + 2x) + x(-9 + 2x)) = 0
((-9 * 7 + 2x * 7) + x(-9 + 2x)) = 0
((-63 + 14x) + x(-9 + 2x)) = 0
(-63 + 14x + (-9 * x + 2x * x)) = 0
(-63 + 14x + (-9x + 2x2)) = 0

Combine like terms: 14x + -9x = 5x
(-63 + 5x + 2x2) = 0

Solving
-63 + 5x + 2x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-7 + -1x)(9 + -2x) = 0


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

Simplifying
-7 + -1x = 0

Solving
-7 + -1x = 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 + -1x = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -1x = 0 + 7
-1x = 0 + 7

Combine like terms: 0 + 7 = 7
-1x = 7

Divide each side by '-1'.
x = -7

Simplifying
x = -7

Subproblem 2
Set the factor '(9 + -2x)' equal to zero and attempt to solve:

Simplifying
9 + -2x = 0

Solving
9 + -2x = 0

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

Add '-9' to each side of the equation.
9 + -9 + -2x = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -2x = 0 + -9
-2x = 0 + -9

Combine like terms: 0 + -9 = -9
-2x = -9

Divide each side by '-2'.
x = 4.5

Simplifying
x = 4.5
Solution
x = {-7, 4.5}

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