28x^2-8x-3=0

Solution for 28x^2-8x-3=0 equation:

Simplifying
28x2 + -8x + -3 = 0

Reorder the terms:
-3 + -8x + 28x2 = 0

Solving
-3 + -8x + 28x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-3 + -14x)(1 + -2x) = 0

Subproblem 1
Set the factor '(-3 + -14x)' equal to zero and attempt to solve:

Simplifying
-3 + -14x = 0

Solving
-3 + -14x = 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 + -14x = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -14x = 0 + 3
-14x = 0 + 3

Combine like terms: 0 + 3 = 3
-14x = 3

Divide each side by '-14'.
x = -0.2142857143

Simplifying
x = -0.2142857143
Subproblem 2
Set the factor '(1 + -2x)' equal to zero and attempt to solve:

Simplifying
1 + -2x = 0

Solving
1 + -2x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + -2x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -2x = 0 + -1
-2x = 0 + -1

Combine like terms: 0 + -1 = -1
-2x = -1

Divide each side by '-2'.
x = 0.5

Simplifying
x = 0.5
Solution
x = {-0.2142857143, 0.5}