x(5x+2)=16

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Solution for x(5x+2)=16 equation: 


Simplifying
x(5x + 2) = 16

Reorder the terms:
x(2 + 5x) = 16
(2 * x + 5x * x) = 16
(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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