20=-16x^2-32x+5

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Solution for 20=-16x^2-32x+5 equation:


Simplifying
20 = -16x2 + -32x + 5

Reorder the terms:
20 = 5 + -32x + -16x2

Solving
20 = 5 + -32x + -16x2

Solving for variable 'x'.

Combine like terms: 20 + -5 = 15
15 + 32x + 16x2 = 5 + -32x + -16x2 + -5 + 32x + 16x2

Reorder the terms:
15 + 32x + 16x2 = 5 + -5 + -32x + 32x + -16x2 + 16x2

Combine like terms: 5 + -5 = 0
15 + 32x + 16x2 = 0 + -32x + 32x + -16x2 + 16x2
15 + 32x + 16x2 = -32x + 32x + -16x2 + 16x2

Combine like terms: -32x + 32x = 0
15 + 32x + 16x2 = 0 + -16x2 + 16x2
15 + 32x + 16x2 = -16x2 + 16x2

Combine like terms: -16x2 + 16x2 = 0
15 + 32x + 16x2 = 0

Factor a trinomial.
(5 + 4x)(3 + 4x) = 0

Subproblem 1

Set the factor '(5 + 4x)' equal to zero and attempt to solve: Simplifying 5 + 4x = 0 Solving 5 + 4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 4x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 4x = 0 + -5 4x = 0 + -5 Combine like terms: 0 + -5 = -5 4x = -5 Divide each side by '4'. x = -1.25 Simplifying x = -1.25

Subproblem 2

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

Solution

x = {-1.25, -0.75}

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