4x^2-21x+9=-8x+6

Solution for 4x^2-21x+9=-8x+6 equation:

Simplifying
4x2 + -21x + 9 = -8x + 6

Reorder the terms:
9 + -21x + 4x2 = -8x + 6

Reorder the terms:
9 + -21x + 4x2 = 6 + -8x

Solving
9 + -21x + 4x2 = 6 + -8x

Solving for variable 'x'.

Reorder the terms:
9 + -6 + -21x + 8x + 4x2 = 6 + -8x + -6 + 8x

Combine like terms: 9 + -6 = 3
3 + -21x + 8x + 4x2 = 6 + -8x + -6 + 8x

Combine like terms: -21x + 8x = -13x
3 + -13x + 4x2 = 6 + -8x + -6 + 8x

Reorder the terms:
3 + -13x + 4x2 = 6 + -6 + -8x + 8x

Combine like terms: 6 + -6 = 0
3 + -13x + 4x2 = 0 + -8x + 8x
3 + -13x + 4x2 = -8x + 8x

Combine like terms: -8x + 8x = 0
3 + -13x + 4x2 = 0

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

Subproblem 1
Set the factor '(1 + -4x)' equal to zero and attempt to solve:

Simplifying
1 + -4x = 0

Solving
1 + -4x = 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 + -4x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -4x = 0 + -1
-4x = 0 + -1

Combine like terms: 0 + -1 = -1
-4x = -1

Divide each side by '-4'.
x = 0.25

Simplifying
x = 0.25
Subproblem 2
Set the factor '(3 + -1x)' equal to zero and attempt to solve:

Simplifying
3 + -1x = 0

Solving
3 + -1x = 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 + -1x = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1x = 0 + -3
-1x = 0 + -3

Combine like terms: 0 + -3 = -3
-1x = -3

Divide each side by '-1'.
x = 3

Simplifying
x = 3
Solution
x = {0.25, 3}