x(9x+16)=4x^2-6x+15

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Solution for x(9x+16)=4x^2-6x+15 equation:


Simplifying
x(9x + 16) = 4x2 + -6x + 15

Reorder the terms:
x(16 + 9x) = 4x2 + -6x + 15
(16 * x + 9x * x) = 4x2 + -6x + 15
(16x + 9x2) = 4x2 + -6x + 15

Reorder the terms:
16x + 9x2 = 15 + -6x + 4x2

Solving
16x + 9x2 = 15 + -6x + 4x2

Solving for variable 'x'.

Reorder the terms:
-15 + 16x + 6x + 9x2 + -4x2 = 15 + -6x + 4x2 + -15 + 6x + -4x2

Combine like terms: 16x + 6x = 22x
-15 + 22x + 9x2 + -4x2 = 15 + -6x + 4x2 + -15 + 6x + -4x2

Combine like terms: 9x2 + -4x2 = 5x2
-15 + 22x + 5x2 = 15 + -6x + 4x2 + -15 + 6x + -4x2

Reorder the terms:
-15 + 22x + 5x2 = 15 + -15 + -6x + 6x + 4x2 + -4x2

Combine like terms: 15 + -15 = 0
-15 + 22x + 5x2 = 0 + -6x + 6x + 4x2 + -4x2
-15 + 22x + 5x2 = -6x + 6x + 4x2 + -4x2

Combine like terms: -6x + 6x = 0
-15 + 22x + 5x2 = 0 + 4x2 + -4x2
-15 + 22x + 5x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-15 + 22x + 5x2 = 0

Factor a trinomial.
(-5 + -1x)(3 + -5x) = 0

Subproblem 1

Set the factor '(-5 + -1x)' equal to zero and attempt to solve: Simplifying -5 + -1x = 0 Solving -5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x = 0 + 5 -1x = 0 + 5 Combine like terms: 0 + 5 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -5

Subproblem 2

Set the factor '(3 + -5x)' equal to zero and attempt to solve: Simplifying 3 + -5x = 0 Solving 3 + -5x = 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 + -5x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -5x = 0 + -3 -5x = 0 + -3 Combine like terms: 0 + -3 = -3 -5x = -3 Divide each side by '-5'. x = 0.6 Simplifying x = 0.6

Solution

x = {-5, 0.6}

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