3x(4x+11)=9

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Solution for 3x(4x+11)=9 equation:


Simplifying
3x(4x + 11) = 9

Reorder the terms:
3x(11 + 4x) = 9
(11 * 3x + 4x * 3x) = 9
(33x + 12x2) = 9

Solving
33x + 12x2 = 9

Solving for variable 'x'.

Reorder the terms:
-9 + 33x + 12x2 = 9 + -9

Combine like terms: 9 + -9 = 0
-9 + 33x + 12x2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-3 + 11x + 4x2) = 0

Factor a trinomial.
3((-3 + -1x)(1 + -4x)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-3 + -1x)' equal to zero and attempt to solve: Simplifying -3 + -1x = 0 Solving -3 + -1x = 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 + -1x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x = 0 + 3 -1x = 0 + 3 Combine like terms: 0 + 3 = 3 -1x = 3 Divide each side by '-1'. x = -3 Simplifying x = -3

Subproblem 2

Set the factor '(1 + -4x)' equal to zero and attempt to solve: Simplifying 1 + -4x = 0 Solving 1 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -4x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -4x = 0 + -1 -4x = 0 + -1 Combine like terms: 0 + -1 = -1 -4x = -1 Divide each side by '-4'. x = 0.25 Simplifying x = 0.25

Solution

x = {-3, 0.25}

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