x^2=5x^2+20x+40

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Solution for x^2=5x^2+20x+40 equation:


Simplifying
x2 = 5x2 + 20x + 40

Reorder the terms:
x2 = 40 + 20x + 5x2

Solving
x2 = 40 + 20x + 5x2

Solving for variable 'x'.

Reorder the terms:
-40 + -20x + x2 + -5x2 = 40 + 20x + 5x2 + -40 + -20x + -5x2

Combine like terms: x2 + -5x2 = -4x2
-40 + -20x + -4x2 = 40 + 20x + 5x2 + -40 + -20x + -5x2

Reorder the terms:
-40 + -20x + -4x2 = 40 + -40 + 20x + -20x + 5x2 + -5x2

Combine like terms: 40 + -40 = 0
-40 + -20x + -4x2 = 0 + 20x + -20x + 5x2 + -5x2
-40 + -20x + -4x2 = 20x + -20x + 5x2 + -5x2

Combine like terms: 20x + -20x = 0
-40 + -20x + -4x2 = 0 + 5x2 + -5x2
-40 + -20x + -4x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
-40 + -20x + -4x2 = 0

Factor out the Greatest Common Factor (GCF), '-4'.
-4(10 + 5x + x2) = 0

Ignore the factor -4.

Subproblem 1

Set the factor '(10 + 5x + x2)' equal to zero and attempt to solve: Simplifying 10 + 5x + x2 = 0 Solving 10 + 5x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-10' to each side of the equation. 10 + 5x + -10 + x2 = 0 + -10 Reorder the terms: 10 + -10 + 5x + x2 = 0 + -10 Combine like terms: 10 + -10 = 0 0 + 5x + x2 = 0 + -10 5x + x2 = 0 + -10 Combine like terms: 0 + -10 = -10 5x + x2 = -10 The x term is 5x. Take half its coefficient (2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. 5x + 6.25 + x2 = -10 + 6.25 Reorder the terms: 6.25 + 5x + x2 = -10 + 6.25 Combine like terms: -10 + 6.25 = -3.75 6.25 + 5x + x2 = -3.75 Factor a perfect square on the left side: (x + 2.5)(x + 2.5) = -3.75 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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