x(7x+39)=2x^2-5x+9

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Solution for x(7x+39)=2x^2-5x+9 equation:


Simplifying
x(7x + 39) = 2x2 + -5x + 9

Reorder the terms:
x(39 + 7x) = 2x2 + -5x + 9
(39 * x + 7x * x) = 2x2 + -5x + 9
(39x + 7x2) = 2x2 + -5x + 9

Reorder the terms:
39x + 7x2 = 9 + -5x + 2x2

Solving
39x + 7x2 = 9 + -5x + 2x2

Solving for variable 'x'.

Reorder the terms:
-9 + 39x + 5x + 7x2 + -2x2 = 9 + -5x + 2x2 + -9 + 5x + -2x2

Combine like terms: 39x + 5x = 44x
-9 + 44x + 7x2 + -2x2 = 9 + -5x + 2x2 + -9 + 5x + -2x2

Combine like terms: 7x2 + -2x2 = 5x2
-9 + 44x + 5x2 = 9 + -5x + 2x2 + -9 + 5x + -2x2

Reorder the terms:
-9 + 44x + 5x2 = 9 + -9 + -5x + 5x + 2x2 + -2x2

Combine like terms: 9 + -9 = 0
-9 + 44x + 5x2 = 0 + -5x + 5x + 2x2 + -2x2
-9 + 44x + 5x2 = -5x + 5x + 2x2 + -2x2

Combine like terms: -5x + 5x = 0
-9 + 44x + 5x2 = 0 + 2x2 + -2x2
-9 + 44x + 5x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
-9 + 44x + 5x2 = 0

Factor a trinomial.
(-9 + -1x)(1 + -5x) = 0

Subproblem 1

Set the factor '(-9 + -1x)' equal to zero and attempt to solve: Simplifying -9 + -1x = 0 Solving -9 + -1x = 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 + -1x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1x = 0 + 9 -1x = 0 + 9 Combine like terms: 0 + 9 = 9 -1x = 9 Divide each side by '-1'. x = -9 Simplifying x = -9

Subproblem 2

Set the factor '(1 + -5x)' equal to zero and attempt to solve: Simplifying 1 + -5x = 0 Solving 1 + -5x = 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 + -5x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -5x = 0 + -1 -5x = 0 + -1 Combine like terms: 0 + -1 = -1 -5x = -1 Divide each side by '-5'. x = 0.2 Simplifying x = 0.2

Solution

x = {-9, 0.2}

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