7x^2-50x+100=5x^2-20x

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Solution for 7x^2-50x+100=5x^2-20x equation:


Simplifying
7x2 + -50x + 100 = 5x2 + -20x

Reorder the terms:
100 + -50x + 7x2 = 5x2 + -20x

Reorder the terms:
100 + -50x + 7x2 = -20x + 5x2

Solving
100 + -50x + 7x2 = -20x + 5x2

Solving for variable 'x'.

Reorder the terms:
100 + -50x + 20x + 7x2 + -5x2 = -20x + 5x2 + 20x + -5x2

Combine like terms: -50x + 20x = -30x
100 + -30x + 7x2 + -5x2 = -20x + 5x2 + 20x + -5x2

Combine like terms: 7x2 + -5x2 = 2x2
100 + -30x + 2x2 = -20x + 5x2 + 20x + -5x2

Reorder the terms:
100 + -30x + 2x2 = -20x + 20x + 5x2 + -5x2

Combine like terms: -20x + 20x = 0
100 + -30x + 2x2 = 0 + 5x2 + -5x2
100 + -30x + 2x2 = 5x2 + -5x2

Combine like terms: 5x2 + -5x2 = 0
100 + -30x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(50 + -15x + x2) = 0

Factor a trinomial.
2((5 + -1x)(10 + -1x)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(5 + -1x)' equal to zero and attempt to solve: Simplifying 5 + -1x = 0 Solving 5 + -1x = 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 + -1x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1x = 0 + -5 -1x = 0 + -5 Combine like terms: 0 + -5 = -5 -1x = -5 Divide each side by '-1'. x = 5 Simplifying x = 5

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 = {5, 10}

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