3x^2=5x+28

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Solution for 3x^2=5x+28 equation:


Simplifying
3x2 = 5x + 28

Reorder the terms:
3x2 = 28 + 5x

Solving
3x2 = 28 + 5x

Solving for variable 'x'.

Reorder the terms:
-28 + -5x + 3x2 = 28 + 5x + -28 + -5x

Reorder the terms:
-28 + -5x + 3x2 = 28 + -28 + 5x + -5x

Combine like terms: 28 + -28 = 0
-28 + -5x + 3x2 = 0 + 5x + -5x
-28 + -5x + 3x2 = 5x + -5x

Combine like terms: 5x + -5x = 0
-28 + -5x + 3x2 = 0

Factor a trinomial.
(-7 + -3x)(4 + -1x) = 0

Subproblem 1

Set the factor '(-7 + -3x)' equal to zero and attempt to solve: Simplifying -7 + -3x = 0 Solving -7 + -3x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -3x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -3x = 0 + 7 -3x = 0 + 7 Combine like terms: 0 + 7 = 7 -3x = 7 Divide each side by '-3'. x = -2.333333333 Simplifying x = -2.333333333

Subproblem 2

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

Solution

x = {-2.333333333, 4}

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