-28x^2+49x=-105

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Solution for -28x^2+49x=-105 equation:


Simplifying
-28x2 + 49x = -105

Reorder the terms:
49x + -28x2 = -105

Solving
49x + -28x2 = -105

Solving for variable 'x'.

Reorder the terms:
105 + 49x + -28x2 = -105 + 105

Combine like terms: -105 + 105 = 0
105 + 49x + -28x2 = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(15 + 7x + -4x2) = 0

Factor a trinomial.
7((3 + -1x)(5 + 4x)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Subproblem 2

Set the factor '(5 + 4x)' equal to zero and attempt to solve: Simplifying 5 + 4x = 0 Solving 5 + 4x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 4x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 4x = 0 + -5 4x = 0 + -5 Combine like terms: 0 + -5 = -5 4x = -5 Divide each side by '4'. x = -1.25 Simplifying x = -1.25

Solution

x = {3, -1.25}

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