5x^2+x+4=2x^2-7x

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Solution for 5x^2+x+4=2x^2-7x equation:


Simplifying
5x2 + x + 4 = 2x2 + -7x

Reorder the terms:
4 + x + 5x2 = 2x2 + -7x

Reorder the terms:
4 + x + 5x2 = -7x + 2x2

Solving
4 + x + 5x2 = -7x + 2x2

Solving for variable 'x'.

Reorder the terms:
4 + x + 7x + 5x2 + -2x2 = -7x + 2x2 + 7x + -2x2

Combine like terms: x + 7x = 8x
4 + 8x + 5x2 + -2x2 = -7x + 2x2 + 7x + -2x2

Combine like terms: 5x2 + -2x2 = 3x2
4 + 8x + 3x2 = -7x + 2x2 + 7x + -2x2

Reorder the terms:
4 + 8x + 3x2 = -7x + 7x + 2x2 + -2x2

Combine like terms: -7x + 7x = 0
4 + 8x + 3x2 = 0 + 2x2 + -2x2
4 + 8x + 3x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
4 + 8x + 3x2 = 0

Factor a trinomial.
(2 + x)(2 + 3x) = 0

Subproblem 1

Set the factor '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Subproblem 2

Set the factor '(2 + 3x)' equal to zero and attempt to solve: Simplifying 2 + 3x = 0 Solving 2 + 3x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 3x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + 3x = 0 + -2 3x = 0 + -2 Combine like terms: 0 + -2 = -2 3x = -2 Divide each side by '3'. x = -0.6666666667 Simplifying x = -0.6666666667

Solution

x = {-2, -0.6666666667}

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