7x^2+12x-x^2-40x=0

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Solution for 7x^2+12x-x^2-40x=0 equation:


Simplifying
7x2 + 12x + -1x2 + -40x = 0

Reorder the terms:
12x + -40x + 7x2 + -1x2 = 0

Combine like terms: 12x + -40x = -28x
-28x + 7x2 + -1x2 = 0

Combine like terms: 7x2 + -1x2 = 6x2
-28x + 6x2 = 0

Solving
-28x + 6x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2x'.
2x(-14 + 3x) = 0

Ignore the factor 2.

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 '(-14 + 3x)' equal to zero and attempt to solve: Simplifying -14 + 3x = 0 Solving -14 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + 3x = 0 + 14 Combine like terms: -14 + 14 = 0 0 + 3x = 0 + 14 3x = 0 + 14 Combine like terms: 0 + 14 = 14 3x = 14 Divide each side by '3'. x = 4.666666667 Simplifying x = 4.666666667

Solution

x = {0, 4.666666667}

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