5x^2+28x-5=7

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


Simplifying
5x2 + 28x + -5 = 7

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

Solving
-5 + 28x + 5x2 = 7

Solving for variable 'x'.

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

Combine like terms: -5 + -7 = -12
-12 + 28x + 5x2 = 7 + -7

Combine like terms: 7 + -7 = 0
-12 + 28x + 5x2 = 0

Factor a trinomial.
(-6 + -1x)(2 + -5x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(2 + -5x)' equal to zero and attempt to solve: Simplifying 2 + -5x = 0 Solving 2 + -5x = 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 + -5x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -5x = 0 + -2 -5x = 0 + -2 Combine like terms: 0 + -2 = -2 -5x = -2 Divide each side by '-5'. x = 0.4 Simplifying x = 0.4

Solution

x = {-6, 0.4}

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