0=4x^2+20x+16

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Solution for 0=4x^2+20x+16 equation:


Simplifying
0 = 4x2 + 20x + 16

Reorder the terms:
0 = 16 + 20x + 4x2

Solving
0 = 16 + 20x + 4x2

Solving for variable 'x'.

Combine like terms: 0 + -16 = -16
-16 + -20x + -4x2 = 16 + 20x + 4x2 + -16 + -20x + -4x2

Reorder the terms:
-16 + -20x + -4x2 = 16 + -16 + 20x + -20x + 4x2 + -4x2

Combine like terms: 16 + -16 = 0
-16 + -20x + -4x2 = 0 + 20x + -20x + 4x2 + -4x2
-16 + -20x + -4x2 = 20x + -20x + 4x2 + -4x2

Combine like terms: 20x + -20x = 0
-16 + -20x + -4x2 = 0 + 4x2 + -4x2
-16 + -20x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-16 + -20x + -4x2 = 0

Factor out the Greatest Common Factor (GCF), '-4'.
-4(4 + 5x + x2) = 0

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

Ignore the factor -4.

Subproblem 1

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

Subproblem 2

Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1

Solution

x = {-4, -1}

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