4x^2=80x-400

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Solution for 4x^2=80x-400 equation:


Simplifying
4x2 = 80x + -400

Reorder the terms:
4x2 = -400 + 80x

Solving
4x2 = -400 + 80x

Solving for variable 'x'.

Reorder the terms:
400 + -80x + 4x2 = -400 + 80x + 400 + -80x

Reorder the terms:
400 + -80x + 4x2 = -400 + 400 + 80x + -80x

Combine like terms: -400 + 400 = 0
400 + -80x + 4x2 = 0 + 80x + -80x
400 + -80x + 4x2 = 80x + -80x

Combine like terms: 80x + -80x = 0
400 + -80x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(100 + -20x + x2) = 0

Factor a trinomial.
4((10 + -1x)(10 + -1x)) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(10 + -1x)' equal to zero and attempt to solve: Simplifying 10 + -1x = 0 Solving 10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1x = 0 + -10 -1x = 0 + -10 Combine like terms: 0 + -10 = -10 -1x = -10 Divide each side by '-1'. x = 10 Simplifying x = 10

Subproblem 2

Set the factor '(10 + -1x)' equal to zero and attempt to solve: Simplifying 10 + -1x = 0 Solving 10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1x = 0 + -10 -1x = 0 + -10 Combine like terms: 0 + -10 = -10 -1x = -10 Divide each side by '-1'. x = 10 Simplifying x = 10

Solution

x = {10, 10}

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