0=4x^2-11x+28

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Solution for 0=4x^2-11x+28 equation:


Simplifying
0 = 4x2 + -11x + 28

Reorder the terms:
0 = 28 + -11x + 4x2

Solving
0 = 28 + -11x + 4x2

Solving for variable 'x'.

Combine like terms: 0 + -28 = -28
-28 + 11x + -4x2 = 28 + -11x + 4x2 + -28 + 11x + -4x2

Reorder the terms:
-28 + 11x + -4x2 = 28 + -28 + -11x + 11x + 4x2 + -4x2

Combine like terms: 28 + -28 = 0
-28 + 11x + -4x2 = 0 + -11x + 11x + 4x2 + -4x2
-28 + 11x + -4x2 = -11x + 11x + 4x2 + -4x2

Combine like terms: -11x + 11x = 0
-28 + 11x + -4x2 = 0 + 4x2 + -4x2
-28 + 11x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
-28 + 11x + -4x2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
7 + -2.75x + x2 = 0

Move the constant term to the right:

Add '-7' to each side of the equation.
7 + -2.75x + -7 + x2 = 0 + -7

Reorder the terms:
7 + -7 + -2.75x + x2 = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -2.75x + x2 = 0 + -7
-2.75x + x2 = 0 + -7

Combine like terms: 0 + -7 = -7
-2.75x + x2 = -7

The x term is -2.75x.  Take half its coefficient (-1.375).
Square it (1.890625) and add it to both sides.

Add '1.890625' to each side of the equation.
-2.75x + 1.890625 + x2 = -7 + 1.890625

Reorder the terms:
1.890625 + -2.75x + x2 = -7 + 1.890625

Combine like terms: -7 + 1.890625 = -5.109375
1.890625 + -2.75x + x2 = -5.109375

Factor a perfect square on the left side:
(x + -1.375)(x + -1.375) = -5.109375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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