5x^2+7x=x^2+2

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


Simplifying
5x2 + 7x = x2 + 2

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

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

Solving
7x + 5x2 = 2 + x2

Solving for variable 'x'.

Reorder the terms:
-2 + 7x + 5x2 + -1x2 = 2 + x2 + -2 + -1x2

Combine like terms: 5x2 + -1x2 = 4x2
-2 + 7x + 4x2 = 2 + x2 + -2 + -1x2

Reorder the terms:
-2 + 7x + 4x2 = 2 + -2 + x2 + -1x2

Combine like terms: 2 + -2 = 0
-2 + 7x + 4x2 = 0 + x2 + -1x2
-2 + 7x + 4x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-2 + 7x + 4x2 = 0

Factor a trinomial.
(-2 + -1x)(1 + -4x) = 0

Subproblem 1

Set the factor '(-2 + -1x)' equal to zero and attempt to solve: Simplifying -2 + -1x = 0 Solving -2 + -1x = 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 + -1x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -1x = 0 + 2 -1x = 0 + 2 Combine like terms: 0 + 2 = 2 -1x = 2 Divide each side by '-1'. x = -2 Simplifying x = -2

Subproblem 2

Set the factor '(1 + -4x)' equal to zero and attempt to solve: Simplifying 1 + -4x = 0 Solving 1 + -4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -4x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -4x = 0 + -1 -4x = 0 + -1 Combine like terms: 0 + -1 = -1 -4x = -1 Divide each side by '-4'. x = 0.25 Simplifying x = 0.25

Solution

x = {-2, 0.25}

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