(4x-9)(8x+7)=0

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Solution for (4x-9)(8x+7)=0 equation:


Simplifying
(4x + -9)(8x + 7) = 0

Reorder the terms:
(-9 + 4x)(8x + 7) = 0

Reorder the terms:
(-9 + 4x)(7 + 8x) = 0

Multiply (-9 + 4x) * (7 + 8x)
(-9(7 + 8x) + 4x * (7 + 8x)) = 0
((7 * -9 + 8x * -9) + 4x * (7 + 8x)) = 0
((-63 + -72x) + 4x * (7 + 8x)) = 0
(-63 + -72x + (7 * 4x + 8x * 4x)) = 0
(-63 + -72x + (28x + 32x2)) = 0

Combine like terms: -72x + 28x = -44x
(-63 + -44x + 32x2) = 0

Solving
-63 + -44x + 32x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-7 + -8x)(9 + -4x) = 0

Subproblem 1

Set the factor '(-7 + -8x)' equal to zero and attempt to solve: Simplifying -7 + -8x = 0 Solving -7 + -8x = 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 + -8x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -8x = 0 + 7 -8x = 0 + 7 Combine like terms: 0 + 7 = 7 -8x = 7 Divide each side by '-8'. x = -0.875 Simplifying x = -0.875

Subproblem 2

Set the factor '(9 + -4x)' equal to zero and attempt to solve: Simplifying 9 + -4x = 0 Solving 9 + -4x = 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 + -4x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -4x = 0 + -9 -4x = 0 + -9 Combine like terms: 0 + -9 = -9 -4x = -9 Divide each side by '-4'. x = 2.25 Simplifying x = 2.25

Solution

x = {-0.875, 2.25}

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