20x^2+11x-7=-4

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Solution for 20x^2+11x-7=-4 equation:


Simplifying
20x2 + 11x + -7 = -4

Reorder the terms:
-7 + 11x + 20x2 = -4

Solving
-7 + 11x + 20x2 = -4

Solving for variable 'x'.

Reorder the terms:
-7 + 4 + 11x + 20x2 = -4 + 4

Combine like terms: -7 + 4 = -3
-3 + 11x + 20x2 = -4 + 4

Combine like terms: -4 + 4 = 0
-3 + 11x + 20x2 = 0

Factor a trinomial.
(-3 + -4x)(1 + -5x) = 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 '(1 + -5x)' equal to zero and attempt to solve: Simplifying 1 + -5x = 0 Solving 1 + -5x = 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 + -5x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -5x = 0 + -1 -5x = 0 + -1 Combine like terms: 0 + -1 = -1 -5x = -1 Divide each side by '-5'. x = 0.2 Simplifying x = 0.2

Solution

x = {-0.75, 0.2}

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