(5x+7)(x-9)=0

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Solution for (5x+7)(x-9)=0 equation:


Simplifying
(5x + 7)(x + -9) = 0

Reorder the terms:
(7 + 5x)(x + -9) = 0

Reorder the terms:
(7 + 5x)(-9 + x) = 0

Multiply (7 + 5x) * (-9 + x)
(7(-9 + x) + 5x * (-9 + x)) = 0
((-9 * 7 + x * 7) + 5x * (-9 + x)) = 0
((-63 + 7x) + 5x * (-9 + x)) = 0
(-63 + 7x + (-9 * 5x + x * 5x)) = 0
(-63 + 7x + (-45x + 5x2)) = 0

Combine like terms: 7x + -45x = -38x
(-63 + -38x + 5x2) = 0

Solving
-63 + -38x + 5x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-7 + -5x)(9 + -1x) = 0

Subproblem 1

Set the factor '(-7 + -5x)' equal to zero and attempt to solve: Simplifying -7 + -5x = 0 Solving -7 + -5x = 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 + -5x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -5x = 0 + 7 -5x = 0 + 7 Combine like terms: 0 + 7 = 7 -5x = 7 Divide each side by '-5'. x = -1.4 Simplifying x = -1.4

Subproblem 2

Set the factor '(9 + -1x)' equal to zero and attempt to solve: Simplifying 9 + -1x = 0 Solving 9 + -1x = 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 + -1x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1x = 0 + -9 -1x = 0 + -9 Combine like terms: 0 + -9 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9

Solution

x = {-1.4, 9}

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