3x^2+2x=40

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Solution for 3x^2+2x=40 equation:


Simplifying
3x2 + 2x = 40

Reorder the terms:
2x + 3x2 = 40

Solving
2x + 3x2 = 40

Solving for variable 'x'.

Reorder the terms:
-40 + 2x + 3x2 = 40 + -40

Combine like terms: 40 + -40 = 0
-40 + 2x + 3x2 = 0

Factor a trinomial.
(-4 + -1x)(10 + -3x) = 0

Subproblem 1

Set the factor '(-4 + -1x)' equal to zero and attempt to solve: Simplifying -4 + -1x = 0 Solving -4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -1x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -1x = 0 + 4 -1x = 0 + 4 Combine like terms: 0 + 4 = 4 -1x = 4 Divide each side by '-1'. x = -4 Simplifying x = -4

Subproblem 2

Set the factor '(10 + -3x)' equal to zero and attempt to solve: Simplifying 10 + -3x = 0 Solving 10 + -3x = 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 + -3x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -3x = 0 + -10 -3x = 0 + -10 Combine like terms: 0 + -10 = -10 -3x = -10 Divide each side by '-3'. x = 3.333333333 Simplifying x = 3.333333333

Solution

x = {-4, 3.333333333}

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