4x^2-6x-3=21-6

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Solution for 4x^2-6x-3=21-6 equation:


Simplifying
4x2 + -6x + -3 = 21 + -6

Reorder the terms:
-3 + -6x + 4x2 = 21 + -6

Combine like terms: 21 + -6 = 15
-3 + -6x + 4x2 = 15

Solving
-3 + -6x + 4x2 = 15

Solving for variable 'x'.

Reorder the terms:
-3 + -15 + -6x + 4x2 = 15 + -15

Combine like terms: -3 + -15 = -18
-18 + -6x + 4x2 = 15 + -15

Combine like terms: 15 + -15 = 0
-18 + -6x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-9 + -3x + 2x2) = 0

Factor a trinomial.
2((-3 + -2x)(3 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-3 + -2x)' equal to zero and attempt to solve: Simplifying -3 + -2x = 0 Solving -3 + -2x = 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 + -2x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -2x = 0 + 3 -2x = 0 + 3 Combine like terms: 0 + 3 = 3 -2x = 3 Divide each side by '-2'. x = -1.5 Simplifying x = -1.5

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 = {-1.5, 3}

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