5x^2+40x=2800

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Solution for 5x^2+40x=2800 equation:


Simplifying
5x2 + 40x = 2800

Reorder the terms:
40x + 5x2 = 2800

Solving
40x + 5x2 = 2800

Solving for variable 'x'.

Reorder the terms:
-2800 + 40x + 5x2 = 2800 + -2800

Combine like terms: 2800 + -2800 = 0
-2800 + 40x + 5x2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(-560 + 8x + x2) = 0

Factor a trinomial.
5((-28 + -1x)(20 + -1x)) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(-28 + -1x)' equal to zero and attempt to solve: Simplifying -28 + -1x = 0 Solving -28 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '28' to each side of the equation. -28 + 28 + -1x = 0 + 28 Combine like terms: -28 + 28 = 0 0 + -1x = 0 + 28 -1x = 0 + 28 Combine like terms: 0 + 28 = 28 -1x = 28 Divide each side by '-1'. x = -28 Simplifying x = -28

Subproblem 2

Set the factor '(20 + -1x)' equal to zero and attempt to solve: Simplifying 20 + -1x = 0 Solving 20 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -1x = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -1x = 0 + -20 -1x = 0 + -20 Combine like terms: 0 + -20 = -20 -1x = -20 Divide each side by '-1'. x = 20 Simplifying x = 20

Solution

x = {-28, 20}

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