-(5x^2)-(10x)-20=0

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Solution for -(5x^2)-(10x)-20=0 equation:


Simplifying
-1(5x2) + -1(10x) + -20 = 0

Remove parenthesis around (5x2)
-1 * 5x2 + -1(10x) + -20 = 0

Multiply -1 * 5
-5x2 + -1(10x) + -20 = 0

Remove parenthesis around (10x)
-5x2 + -1 * 10x + -20 = 0

Multiply -1 * 10
-5x2 + -10x + -20 = 0

Reorder the terms:
-20 + -10x + -5x2 = 0

Solving
-20 + -10x + -5x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '-5'.
-5(4 + 2x + x2) = 0

Ignore the factor -5.

Subproblem 1

Set the factor '(4 + 2x + x2)' equal to zero and attempt to solve: Simplifying 4 + 2x + x2 = 0 Solving 4 + 2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-4' to each side of the equation. 4 + 2x + -4 + x2 = 0 + -4 Reorder the terms: 4 + -4 + 2x + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 2x + x2 = 0 + -4 2x + x2 = 0 + -4 Combine like terms: 0 + -4 = -4 2x + x2 = -4 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = -4 + 1 Reorder the terms: 1 + 2x + x2 = -4 + 1 Combine like terms: -4 + 1 = -3 1 + 2x + x2 = -3 Factor a perfect square on the left side: (x + 1)(x + 1) = -3 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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