16x^2+15x-35=0

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Solution for 16x^2+15x-35=0 equation:


Simplifying
16x2 + 15x + -35 = 0

Reorder the terms:
-35 + 15x + 16x2 = 0

Solving
-35 + 15x + 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'.
-2.1875 + 0.9375x + x2 = 0

Move the constant term to the right:

Add '2.1875' to each side of the equation.
-2.1875 + 0.9375x + 2.1875 + x2 = 0 + 2.1875

Reorder the terms:
-2.1875 + 2.1875 + 0.9375x + x2 = 0 + 2.1875

Combine like terms: -2.1875 + 2.1875 = 0.0000
0.0000 + 0.9375x + x2 = 0 + 2.1875
0.9375x + x2 = 0 + 2.1875

Combine like terms: 0 + 2.1875 = 2.1875
0.9375x + x2 = 2.1875

The x term is 0.9375x.  Take half its coefficient (0.46875).
Square it (0.2197265625) and add it to both sides.

Add '0.2197265625' to each side of the equation.
0.9375x + 0.2197265625 + x2 = 2.1875 + 0.2197265625

Reorder the terms:
0.2197265625 + 0.9375x + x2 = 2.1875 + 0.2197265625

Combine like terms: 2.1875 + 0.2197265625 = 2.4072265625
0.2197265625 + 0.9375x + x2 = 2.4072265625

Factor a perfect square on the left side:
(x + 0.46875)(x + 0.46875) = 2.4072265625

Calculate the square root of the right side: 1.551523948

Break this problem into two subproblems by setting 
(x + 0.46875) equal to 1.551523948 and -1.551523948.

Subproblem 1

x + 0.46875 = 1.551523948 Simplifying x + 0.46875 = 1.551523948 Reorder the terms: 0.46875 + x = 1.551523948 Solving 0.46875 + x = 1.551523948 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.46875' to each side of the equation. 0.46875 + -0.46875 + x = 1.551523948 + -0.46875 Combine like terms: 0.46875 + -0.46875 = 0.00000 0.00000 + x = 1.551523948 + -0.46875 x = 1.551523948 + -0.46875 Combine like terms: 1.551523948 + -0.46875 = 1.082773948 x = 1.082773948 Simplifying x = 1.082773948

Subproblem 2

x + 0.46875 = -1.551523948 Simplifying x + 0.46875 = -1.551523948 Reorder the terms: 0.46875 + x = -1.551523948 Solving 0.46875 + x = -1.551523948 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.46875' to each side of the equation. 0.46875 + -0.46875 + x = -1.551523948 + -0.46875 Combine like terms: 0.46875 + -0.46875 = 0.00000 0.00000 + x = -1.551523948 + -0.46875 x = -1.551523948 + -0.46875 Combine like terms: -1.551523948 + -0.46875 = -2.020273948 x = -2.020273948 Simplifying x = -2.020273948

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.082773948, -2.020273948}

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