-16x^2+75x+7=0

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Solution for -16x^2+75x+7=0 equation:


Simplifying
-16x2 + 75x + 7 = 0

Reorder the terms:
7 + 75x + -16x2 = 0

Solving
7 + 75x + -16x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-0.4375 + -4.6875x + x2 = 0

Move the constant term to the right:

Add '0.4375' to each side of the equation.
-0.4375 + -4.6875x + 0.4375 + x2 = 0 + 0.4375

Reorder the terms:
-0.4375 + 0.4375 + -4.6875x + x2 = 0 + 0.4375

Combine like terms: -0.4375 + 0.4375 = 0.0000
0.0000 + -4.6875x + x2 = 0 + 0.4375
-4.6875x + x2 = 0 + 0.4375

Combine like terms: 0 + 0.4375 = 0.4375
-4.6875x + x2 = 0.4375

The x term is -4.6875x.  Take half its coefficient (-2.34375).
Square it (5.493164063) and add it to both sides.

Add '5.493164063' to each side of the equation.
-4.6875x + 5.493164063 + x2 = 0.4375 + 5.493164063

Reorder the terms:
5.493164063 + -4.6875x + x2 = 0.4375 + 5.493164063

Combine like terms: 0.4375 + 5.493164063 = 5.930664063
5.493164063 + -4.6875x + x2 = 5.930664063

Factor a perfect square on the left side:
(x + -2.34375)(x + -2.34375) = 5.930664063

Calculate the square root of the right side: 2.435295478

Break this problem into two subproblems by setting 
(x + -2.34375) equal to 2.435295478 and -2.435295478.

Subproblem 1

x + -2.34375 = 2.435295478 Simplifying x + -2.34375 = 2.435295478 Reorder the terms: -2.34375 + x = 2.435295478 Solving -2.34375 + x = 2.435295478 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.34375' to each side of the equation. -2.34375 + 2.34375 + x = 2.435295478 + 2.34375 Combine like terms: -2.34375 + 2.34375 = 0.00000 0.00000 + x = 2.435295478 + 2.34375 x = 2.435295478 + 2.34375 Combine like terms: 2.435295478 + 2.34375 = 4.779045478 x = 4.779045478 Simplifying x = 4.779045478

Subproblem 2

x + -2.34375 = -2.435295478 Simplifying x + -2.34375 = -2.435295478 Reorder the terms: -2.34375 + x = -2.435295478 Solving -2.34375 + x = -2.435295478 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.34375' to each side of the equation. -2.34375 + 2.34375 + x = -2.435295478 + 2.34375 Combine like terms: -2.34375 + 2.34375 = 0.00000 0.00000 + x = -2.435295478 + 2.34375 x = -2.435295478 + 2.34375 Combine like terms: -2.435295478 + 2.34375 = -0.091545478 x = -0.091545478 Simplifying x = -0.091545478

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.779045478, -0.091545478}

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