3x^2+x=140

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Solution for 3x^2+x=140 equation:


Simplifying
3x2 + x = 140

Reorder the terms:
x + 3x2 = 140

Solving
x + 3x2 = 140

Solving for variable 'x'.

Reorder the terms:
-140 + x + 3x2 = 140 + -140

Combine like terms: 140 + -140 = 0
-140 + x + 3x2 = 0

Factor a trinomial.
(-7 + -1x)(20 + -3x) = 0

Subproblem 1

Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(20 + -3x)' equal to zero and attempt to solve: Simplifying 20 + -3x = 0 Solving 20 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -3x = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -3x = 0 + -20 -3x = 0 + -20 Combine like terms: 0 + -20 = -20 -3x = -20 Divide each side by '-3'. x = 6.666666667 Simplifying x = 6.666666667

Solution

x = {-7, 6.666666667}

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