4x^2-21x+15=-6x+6

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Solution for 4x^2-21x+15=-6x+6 equation:


Simplifying
4x2 + -21x + 15 = -6x + 6

Reorder the terms:
15 + -21x + 4x2 = -6x + 6

Reorder the terms:
15 + -21x + 4x2 = 6 + -6x

Solving
15 + -21x + 4x2 = 6 + -6x

Solving for variable 'x'.

Reorder the terms:
15 + -6 + -21x + 6x + 4x2 = 6 + -6x + -6 + 6x

Combine like terms: 15 + -6 = 9
9 + -21x + 6x + 4x2 = 6 + -6x + -6 + 6x

Combine like terms: -21x + 6x = -15x
9 + -15x + 4x2 = 6 + -6x + -6 + 6x

Reorder the terms:
9 + -15x + 4x2 = 6 + -6 + -6x + 6x

Combine like terms: 6 + -6 = 0
9 + -15x + 4x2 = 0 + -6x + 6x
9 + -15x + 4x2 = -6x + 6x

Combine like terms: -6x + 6x = 0
9 + -15x + 4x2 = 0

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

Subproblem 1

Set the factor '(3 + -4x)' equal to zero and attempt to solve: Simplifying 3 + -4x = 0 Solving 3 + -4x = 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 + -4x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4x = 0 + -3 -4x = 0 + -3 Combine like terms: 0 + -3 = -3 -4x = -3 Divide each side by '-4'. x = 0.75 Simplifying x = 0.75

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 = {0.75, 3}

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