-25x^2+19x+16=0

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Solution for -25x^2+19x+16=0 equation:


Simplifying
-25x2 + 19x + 16 = 0

Reorder the terms:
16 + 19x + -25x2 = 0

Solving
16 + 19x + -25x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-25 the coefficient of the squared term: 

Divide each side by '-25'.
-0.64 + -0.76x + x2 = 0

Move the constant term to the right:

Add '0.64' to each side of the equation.
-0.64 + -0.76x + 0.64 + x2 = 0 + 0.64

Reorder the terms:
-0.64 + 0.64 + -0.76x + x2 = 0 + 0.64

Combine like terms: -0.64 + 0.64 = 0.00
0.00 + -0.76x + x2 = 0 + 0.64
-0.76x + x2 = 0 + 0.64

Combine like terms: 0 + 0.64 = 0.64
-0.76x + x2 = 0.64

The x term is -0.76x.  Take half its coefficient (-0.38).
Square it (0.1444) and add it to both sides.

Add '0.1444' to each side of the equation.
-0.76x + 0.1444 + x2 = 0.64 + 0.1444

Reorder the terms:
0.1444 + -0.76x + x2 = 0.64 + 0.1444

Combine like terms: 0.64 + 0.1444 = 0.7844
0.1444 + -0.76x + x2 = 0.7844

Factor a perfect square on the left side:
(x + -0.38)(x + -0.38) = 0.7844

Calculate the square root of the right side: 0.885663593

Break this problem into two subproblems by setting 
(x + -0.38) equal to 0.885663593 and -0.885663593.

Subproblem 1

x + -0.38 = 0.885663593 Simplifying x + -0.38 = 0.885663593 Reorder the terms: -0.38 + x = 0.885663593 Solving -0.38 + x = 0.885663593 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.38' to each side of the equation. -0.38 + 0.38 + x = 0.885663593 + 0.38 Combine like terms: -0.38 + 0.38 = 0.00 0.00 + x = 0.885663593 + 0.38 x = 0.885663593 + 0.38 Combine like terms: 0.885663593 + 0.38 = 1.265663593 x = 1.265663593 Simplifying x = 1.265663593

Subproblem 2

x + -0.38 = -0.885663593 Simplifying x + -0.38 = -0.885663593 Reorder the terms: -0.38 + x = -0.885663593 Solving -0.38 + x = -0.885663593 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.38' to each side of the equation. -0.38 + 0.38 + x = -0.885663593 + 0.38 Combine like terms: -0.38 + 0.38 = 0.00 0.00 + x = -0.885663593 + 0.38 x = -0.885663593 + 0.38 Combine like terms: -0.885663593 + 0.38 = -0.505663593 x = -0.505663593 Simplifying x = -0.505663593

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.265663593, -0.505663593}

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