4x^2-28x=-3x^2-5x-18

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Solution for 4x^2-28x=-3x^2-5x-18 equation:


Simplifying
4x2 + -28x = -3x2 + -5x + -18

Reorder the terms:
-28x + 4x2 = -3x2 + -5x + -18

Reorder the terms:
-28x + 4x2 = -18 + -5x + -3x2

Solving
-28x + 4x2 = -18 + -5x + -3x2

Solving for variable 'x'.

Reorder the terms:
18 + -28x + 5x + 4x2 + 3x2 = -18 + -5x + -3x2 + 18 + 5x + 3x2

Combine like terms: -28x + 5x = -23x
18 + -23x + 4x2 + 3x2 = -18 + -5x + -3x2 + 18 + 5x + 3x2

Combine like terms: 4x2 + 3x2 = 7x2
18 + -23x + 7x2 = -18 + -5x + -3x2 + 18 + 5x + 3x2

Reorder the terms:
18 + -23x + 7x2 = -18 + 18 + -5x + 5x + -3x2 + 3x2

Combine like terms: -18 + 18 = 0
18 + -23x + 7x2 = 0 + -5x + 5x + -3x2 + 3x2
18 + -23x + 7x2 = -5x + 5x + -3x2 + 3x2

Combine like terms: -5x + 5x = 0
18 + -23x + 7x2 = 0 + -3x2 + 3x2
18 + -23x + 7x2 = -3x2 + 3x2

Combine like terms: -3x2 + 3x2 = 0
18 + -23x + 7x2 = 0

Factor a trinomial.
(9 + -7x)(2 + -1x) = 0

Subproblem 1

Set the factor '(9 + -7x)' equal to zero and attempt to solve: Simplifying 9 + -7x = 0 Solving 9 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -7x = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -7x = 0 + -9 -7x = 0 + -9 Combine like terms: 0 + -9 = -9 -7x = -9 Divide each side by '-7'. x = 1.285714286 Simplifying x = 1.285714286

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 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 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {1.285714286, 2}

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