2x^2+5x^2=x^2+30x

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Solution for 2x^2+5x^2=x^2+30x equation:


Simplifying
2x2 + 5x2 = x2 + 30x

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

Reorder the terms:
7x2 = 30x + x2

Solving
7x2 = 30x + x2

Solving for variable 'x'.

Reorder the terms:
-30x + 7x2 + -1x2 = 30x + x2 + -30x + -1x2

Combine like terms: 7x2 + -1x2 = 6x2
-30x + 6x2 = 30x + x2 + -30x + -1x2

Reorder the terms:
-30x + 6x2 = 30x + -30x + x2 + -1x2

Combine like terms: 30x + -30x = 0
-30x + 6x2 = 0 + x2 + -1x2
-30x + 6x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-30x + 6x2 = 0

Factor out the Greatest Common Factor (GCF), '6x'.
6x(-5 + x) = 0

Ignore the factor 6.

Subproblem 1

Set the factor 'x' equal to zero and attempt to solve: Simplifying x = 0 Solving x = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x = 0

Subproblem 2

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

Solution

x = {0, 5}

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