(3x+84)(8x+9)=

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Solution for (3x+84)(8x+9)= equation:


Simplifying
(3x + 84)(8x + 9) = 0

Reorder the terms:
(84 + 3x)(8x + 9) = 0

Reorder the terms:
(84 + 3x)(9 + 8x) = 0

Multiply (84 + 3x) * (9 + 8x)
(84(9 + 8x) + 3x * (9 + 8x)) = 0
((9 * 84 + 8x * 84) + 3x * (9 + 8x)) = 0
((756 + 672x) + 3x * (9 + 8x)) = 0
(756 + 672x + (9 * 3x + 8x * 3x)) = 0
(756 + 672x + (27x + 24x2)) = 0

Combine like terms: 672x + 27x = 699x
(756 + 699x + 24x2) = 0

Solving
756 + 699x + 24x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '3'.
3(252 + 233x + 8x2) = 0

Factor a trinomial.
3((28 + x)(9 + 8x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(28 + x)' equal to zero and attempt to solve: Simplifying 28 + x = 0 Solving 28 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + x = 0 + -28 Combine like terms: 28 + -28 = 0 0 + x = 0 + -28 x = 0 + -28 Combine like terms: 0 + -28 = -28 x = -28 Simplifying x = -28

Subproblem 2

Set the factor '(9 + 8x)' equal to zero and attempt to solve: Simplifying 9 + 8x = 0 Solving 9 + 8x = 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 + 8x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 8x = 0 + -9 8x = 0 + -9 Combine like terms: 0 + -9 = -9 8x = -9 Divide each side by '8'. x = -1.125 Simplifying x = -1.125

Solution

x = {-28, -1.125}

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