-16x^2+45x-3=0

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Solution for -16x^2+45x-3=0 equation:


Simplifying
-16x2 + 45x + -3 = 0

Reorder the terms:
-3 + 45x + -16x2 = 0

Solving
-3 + 45x + -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'.
0.1875 + -2.8125x + x2 = 0

Move the constant term to the right:

Add '-0.1875' to each side of the equation.
0.1875 + -2.8125x + -0.1875 + x2 = 0 + -0.1875

Reorder the terms:
0.1875 + -0.1875 + -2.8125x + x2 = 0 + -0.1875

Combine like terms: 0.1875 + -0.1875 = 0.0000
0.0000 + -2.8125x + x2 = 0 + -0.1875
-2.8125x + x2 = 0 + -0.1875

Combine like terms: 0 + -0.1875 = -0.1875
-2.8125x + x2 = -0.1875

The x term is -2.8125x.  Take half its coefficient (-1.40625).
Square it (1.977539063) and add it to both sides.

Add '1.977539063' to each side of the equation.
-2.8125x + 1.977539063 + x2 = -0.1875 + 1.977539063

Reorder the terms:
1.977539063 + -2.8125x + x2 = -0.1875 + 1.977539063

Combine like terms: -0.1875 + 1.977539063 = 1.790039063
1.977539063 + -2.8125x + x2 = 1.790039063

Factor a perfect square on the left side:
(x + -1.40625)(x + -1.40625) = 1.790039063

Calculate the square root of the right side: 1.337923414

Break this problem into two subproblems by setting 
(x + -1.40625) equal to 1.337923414 and -1.337923414.

Subproblem 1

x + -1.40625 = 1.337923414 Simplifying x + -1.40625 = 1.337923414 Reorder the terms: -1.40625 + x = 1.337923414 Solving -1.40625 + x = 1.337923414 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.40625' to each side of the equation. -1.40625 + 1.40625 + x = 1.337923414 + 1.40625 Combine like terms: -1.40625 + 1.40625 = 0.00000 0.00000 + x = 1.337923414 + 1.40625 x = 1.337923414 + 1.40625 Combine like terms: 1.337923414 + 1.40625 = 2.744173414 x = 2.744173414 Simplifying x = 2.744173414

Subproblem 2

x + -1.40625 = -1.337923414 Simplifying x + -1.40625 = -1.337923414 Reorder the terms: -1.40625 + x = -1.337923414 Solving -1.40625 + x = -1.337923414 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.40625' to each side of the equation. -1.40625 + 1.40625 + x = -1.337923414 + 1.40625 Combine like terms: -1.40625 + 1.40625 = 0.00000 0.00000 + x = -1.337923414 + 1.40625 x = -1.337923414 + 1.40625 Combine like terms: -1.337923414 + 1.40625 = 0.068326586 x = 0.068326586 Simplifying x = 0.068326586

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.744173414, 0.068326586}

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