4x^2-x-3=11

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


Simplifying
4x2 + -1x + -3 = 11

Reorder the terms:
-3 + -1x + 4x2 = 11

Solving
-3 + -1x + 4x2 = 11

Solving for variable 'x'.

Reorder the terms:
-3 + -11 + -1x + 4x2 = 11 + -11

Combine like terms: -3 + -11 = -14
-14 + -1x + 4x2 = 11 + -11

Combine like terms: 11 + -11 = 0
-14 + -1x + 4x2 = 0

Factor a trinomial.
(-7 + -4x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-7 + -4x)' equal to zero and attempt to solve: Simplifying -7 + -4x = 0 Solving -7 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -4x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -4x = 0 + 7 -4x = 0 + 7 Combine like terms: 0 + 7 = 7 -4x = 7 Divide each side by '-4'. x = -1.75 Simplifying x = -1.75

Subproblem 2

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

Solution

x = {-1.75, 2}

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