5x^2+2x=16

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Solution for 5x^2+2x=16 equation:


Simplifying
5x2 + 2x = 16

Reorder the terms:
2x + 5x2 = 16

Solving
2x + 5x2 = 16

Solving for variable 'x'.

Reorder the terms:
-16 + 2x + 5x2 = 16 + -16

Combine like terms: 16 + -16 = 0
-16 + 2x + 5x2 = 0

Factor a trinomial.
(-2 + -1x)(8 + -5x) = 0

Subproblem 1

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

Subproblem 2

Set the factor '(8 + -5x)' equal to zero and attempt to solve: Simplifying 8 + -5x = 0 Solving 8 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + -5x = 0 + -8 Combine like terms: 8 + -8 = 0 0 + -5x = 0 + -8 -5x = 0 + -8 Combine like terms: 0 + -8 = -8 -5x = -8 Divide each side by '-5'. x = 1.6 Simplifying x = 1.6

Solution

x = {-2, 1.6}

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