4x^2-51x+147=0

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Solution for 4x^2-51x+147=0 equation:


Simplifying
4x2 + -51x + 147 = 0

Reorder the terms:
147 + -51x + 4x2 = 0

Solving
147 + -51x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
36.75 + -12.75x + x2 = 0

Move the constant term to the right:

Add '-36.75' to each side of the equation.
36.75 + -12.75x + -36.75 + x2 = 0 + -36.75

Reorder the terms:
36.75 + -36.75 + -12.75x + x2 = 0 + -36.75

Combine like terms: 36.75 + -36.75 = 0.00
0.00 + -12.75x + x2 = 0 + -36.75
-12.75x + x2 = 0 + -36.75

Combine like terms: 0 + -36.75 = -36.75
-12.75x + x2 = -36.75

The x term is -12.75x.  Take half its coefficient (-6.375).
Square it (40.640625) and add it to both sides.

Add '40.640625' to each side of the equation.
-12.75x + 40.640625 + x2 = -36.75 + 40.640625

Reorder the terms:
40.640625 + -12.75x + x2 = -36.75 + 40.640625

Combine like terms: -36.75 + 40.640625 = 3.890625
40.640625 + -12.75x + x2 = 3.890625

Factor a perfect square on the left side:
(x + -6.375)(x + -6.375) = 3.890625

Calculate the square root of the right side: 1.97246673

Break this problem into two subproblems by setting 
(x + -6.375) equal to 1.97246673 and -1.97246673.

Subproblem 1

x + -6.375 = 1.97246673 Simplifying x + -6.375 = 1.97246673 Reorder the terms: -6.375 + x = 1.97246673 Solving -6.375 + x = 1.97246673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.375' to each side of the equation. -6.375 + 6.375 + x = 1.97246673 + 6.375 Combine like terms: -6.375 + 6.375 = 0.000 0.000 + x = 1.97246673 + 6.375 x = 1.97246673 + 6.375 Combine like terms: 1.97246673 + 6.375 = 8.34746673 x = 8.34746673 Simplifying x = 8.34746673

Subproblem 2

x + -6.375 = -1.97246673 Simplifying x + -6.375 = -1.97246673 Reorder the terms: -6.375 + x = -1.97246673 Solving -6.375 + x = -1.97246673 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.375' to each side of the equation. -6.375 + 6.375 + x = -1.97246673 + 6.375 Combine like terms: -6.375 + 6.375 = 0.000 0.000 + x = -1.97246673 + 6.375 x = -1.97246673 + 6.375 Combine like terms: -1.97246673 + 6.375 = 4.40253327 x = 4.40253327 Simplifying x = 4.40253327

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.34746673, 4.40253327}

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