2x^2+28=15x

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Solution for 2x^2+28=15x equation:


Simplifying
2x2 + 28 = 15x

Reorder the terms:
28 + 2x2 = 15x

Solving
28 + 2x2 = 15x

Solving for variable 'x'.

Reorder the terms:
28 + -15x + 2x2 = 15x + -15x

Combine like terms: 15x + -15x = 0
28 + -15x + 2x2 = 0

Factor a trinomial.
(7 + -2x)(4 + -1x) = 0

Subproblem 1

Set the factor '(7 + -2x)' equal to zero and attempt to solve: Simplifying 7 + -2x = 0 Solving 7 + -2x = 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 + -2x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -2x = 0 + -7 -2x = 0 + -7 Combine like terms: 0 + -7 = -7 -2x = -7 Divide each side by '-2'. x = 3.5 Simplifying x = 3.5

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 = {3.5, 4}

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