x^2+5x-28=7x-4

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Solution for x^2+5x-28=7x-4 equation:


Simplifying
x2 + 5x + -28 = 7x + -4

Reorder the terms:
-28 + 5x + x2 = 7x + -4

Reorder the terms:
-28 + 5x + x2 = -4 + 7x

Solving
-28 + 5x + x2 = -4 + 7x

Solving for variable 'x'.

Reorder the terms:
-28 + 4 + 5x + -7x + x2 = -4 + 7x + 4 + -7x

Combine like terms: -28 + 4 = -24
-24 + 5x + -7x + x2 = -4 + 7x + 4 + -7x

Combine like terms: 5x + -7x = -2x
-24 + -2x + x2 = -4 + 7x + 4 + -7x

Reorder the terms:
-24 + -2x + x2 = -4 + 4 + 7x + -7x

Combine like terms: -4 + 4 = 0
-24 + -2x + x2 = 0 + 7x + -7x
-24 + -2x + x2 = 7x + -7x

Combine like terms: 7x + -7x = 0
-24 + -2x + x2 = 0

Factor a trinomial.
(-4 + -1x)(6 + -1x) = 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 '(6 + -1x)' equal to zero and attempt to solve: Simplifying 6 + -1x = 0 Solving 6 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1x = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x = 0 + -6 -1x = 0 + -6 Combine like terms: 0 + -6 = -6 -1x = -6 Divide each side by '-1'. x = 6 Simplifying x = 6

Solution

x = {-4, 6}

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