(7x-9)(8x+3)=0

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Solution for (7x-9)(8x+3)=0 equation:


Simplifying
(7x + -9)(8x + 3) = 0

Reorder the terms:
(-9 + 7x)(8x + 3) = 0

Reorder the terms:
(-9 + 7x)(3 + 8x) = 0

Multiply (-9 + 7x) * (3 + 8x)
(-9(3 + 8x) + 7x * (3 + 8x)) = 0
((3 * -9 + 8x * -9) + 7x * (3 + 8x)) = 0
((-27 + -72x) + 7x * (3 + 8x)) = 0
(-27 + -72x + (3 * 7x + 8x * 7x)) = 0
(-27 + -72x + (21x + 56x2)) = 0

Combine like terms: -72x + 21x = -51x
(-27 + -51x + 56x2) = 0

Solving
-27 + -51x + 56x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-3 + -8x)(9 + -7x) = 0

Subproblem 1

Set the factor '(-3 + -8x)' equal to zero and attempt to solve: Simplifying -3 + -8x = 0 Solving -3 + -8x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + -8x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -8x = 0 + 3 -8x = 0 + 3 Combine like terms: 0 + 3 = 3 -8x = 3 Divide each side by '-8'. x = -0.375 Simplifying x = -0.375

Subproblem 2

Set the factor '(9 + -7x)' equal to zero and attempt to solve: Simplifying 9 + -7x = 0 Solving 9 + -7x = 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 + -7x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -7x = 0 + -9 -7x = 0 + -9 Combine like terms: 0 + -9 = -9 -7x = -9 Divide each side by '-7'. x = 1.285714286 Simplifying x = 1.285714286

Solution

x = {-0.375, 1.285714286}

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