-16x^2+75x+4=0

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Solution for -16x^2+75x+4=0 equation:


Simplifying
-16x2 + 75x + 4 = 0

Reorder the terms:
4 + 75x + -16x2 = 0

Solving
4 + 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'.
-0.25 + -4.6875x + x2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + -4.6875x + 0.25 + x2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + -4.6875x + x2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + -4.6875x + x2 = 0 + 0.25
-4.6875x + x2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
-4.6875x + x2 = 0.25

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 = 0.25 + 5.493164063

Reorder the terms:
5.493164063 + -4.6875x + x2 = 0.25 + 5.493164063

Combine like terms: 0.25 + 5.493164063 = 5.743164063
5.493164063 + -4.6875x + x2 = 5.743164063

Factor a perfect square on the left side:
(x + -2.34375)(x + -2.34375) = 5.743164063

Calculate the square root of the right side: 2.396489946

Break this problem into two subproblems by setting 
(x + -2.34375) equal to 2.396489946 and -2.396489946.

Subproblem 1

x + -2.34375 = 2.396489946 Simplifying x + -2.34375 = 2.396489946 Reorder the terms: -2.34375 + x = 2.396489946 Solving -2.34375 + x = 2.396489946 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 = 2.396489946 + 2.34375 Combine like terms: -2.34375 + 2.34375 = 0.00000 0.00000 + x = 2.396489946 + 2.34375 x = 2.396489946 + 2.34375 Combine like terms: 2.396489946 + 2.34375 = 4.740239946 x = 4.740239946 Simplifying x = 4.740239946

Subproblem 2

x + -2.34375 = -2.396489946 Simplifying x + -2.34375 = -2.396489946 Reorder the terms: -2.34375 + x = -2.396489946 Solving -2.34375 + x = -2.396489946 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 = -2.396489946 + 2.34375 Combine like terms: -2.34375 + 2.34375 = 0.00000 0.00000 + x = -2.396489946 + 2.34375 x = -2.396489946 + 2.34375 Combine like terms: -2.396489946 + 2.34375 = -0.052739946 x = -0.052739946 Simplifying x = -0.052739946

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.740239946, -0.052739946}

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