3x^2+4x-11=21-16x

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Solution for 3x^2+4x-11=21-16x equation:


Simplifying
3x2 + 4x + -11 = 21 + -16x

Reorder the terms:
-11 + 4x + 3x2 = 21 + -16x

Solving
-11 + 4x + 3x2 = 21 + -16x

Solving for variable 'x'.

Reorder the terms:
-11 + -21 + 4x + 16x + 3x2 = 21 + -16x + -21 + 16x

Combine like terms: -11 + -21 = -32
-32 + 4x + 16x + 3x2 = 21 + -16x + -21 + 16x

Combine like terms: 4x + 16x = 20x
-32 + 20x + 3x2 = 21 + -16x + -21 + 16x

Reorder the terms:
-32 + 20x + 3x2 = 21 + -21 + -16x + 16x

Combine like terms: 21 + -21 = 0
-32 + 20x + 3x2 = 0 + -16x + 16x
-32 + 20x + 3x2 = -16x + 16x

Combine like terms: -16x + 16x = 0
-32 + 20x + 3x2 = 0

Factor a trinomial.
(-8 + -1x)(4 + -3x) = 0


Subproblem 1
Set the factor '(-8 + -1x)' equal to zero and attempt to solve:

Simplifying
-8 + -1x = 0

Solving
-8 + -1x = 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 + -1x = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -1x = 0 + 8
-1x = 0 + 8

Combine like terms: 0 + 8 = 8
-1x = 8

Divide each side by '-1'.
x = -8

Simplifying
x = -8

Subproblem 2
Set the factor '(4 + -3x)' equal to zero and attempt to solve:

Simplifying
4 + -3x = 0

Solving
4 + -3x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + -4 + -3x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -3x = 0 + -4
-3x = 0 + -4

Combine like terms: 0 + -4 = -4
-3x = -4

Divide each side by '-3'.
x = 1.333333333

Simplifying
x = 1.333333333
Solution
x = {-8, 1.333333333}

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