35x^2-45x-4=0

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Solution for 35x^2-45x-4=0 equation:


Simplifying
35x2 + -45x + -4 = 0

Reorder the terms:
-4 + -45x + 35x2 = 0

Solving
-4 + -45x + 35x2 = 0

Solving for variable 'x'.

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

Divide each side by '35'.
-0.1142857143 + -1.285714286x + x2 = 0

Move the constant term to the right:

Add '0.1142857143' to each side of the equation.
-0.1142857143 + -1.285714286x + 0.1142857143 + x2 = 0 + 0.1142857143

Reorder the terms:
-0.1142857143 + 0.1142857143 + -1.285714286x + x2 = 0 + 0.1142857143

Combine like terms: -0.1142857143 + 0.1142857143 = 0.0000000000
0.0000000000 + -1.285714286x + x2 = 0 + 0.1142857143
-1.285714286x + x2 = 0 + 0.1142857143

Combine like terms: 0 + 0.1142857143 = 0.1142857143
-1.285714286x + x2 = 0.1142857143

The x term is -1.285714286x.  Take half its coefficient (-0.642857143).
Square it (0.4132653063) and add it to both sides.

Add '0.4132653063' to each side of the equation.
-1.285714286x + 0.4132653063 + x2 = 0.1142857143 + 0.4132653063

Reorder the terms:
0.4132653063 + -1.285714286x + x2 = 0.1142857143 + 0.4132653063

Combine like terms: 0.1142857143 + 0.4132653063 = 0.5275510206
0.4132653063 + -1.285714286x + x2 = 0.5275510206

Factor a perfect square on the left side:
(x + -0.642857143)(x + -0.642857143) = 0.5275510206

Calculate the square root of the right side: 0.726327075

Break this problem into two subproblems by setting 
(x + -0.642857143) equal to 0.726327075 and -0.726327075.

Subproblem 1

x + -0.642857143 = 0.726327075 Simplifying x + -0.642857143 = 0.726327075 Reorder the terms: -0.642857143 + x = 0.726327075 Solving -0.642857143 + x = 0.726327075 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.642857143' to each side of the equation. -0.642857143 + 0.642857143 + x = 0.726327075 + 0.642857143 Combine like terms: -0.642857143 + 0.642857143 = 0.000000000 0.000000000 + x = 0.726327075 + 0.642857143 x = 0.726327075 + 0.642857143 Combine like terms: 0.726327075 + 0.642857143 = 1.369184218 x = 1.369184218 Simplifying x = 1.369184218

Subproblem 2

x + -0.642857143 = -0.726327075 Simplifying x + -0.642857143 = -0.726327075 Reorder the terms: -0.642857143 + x = -0.726327075 Solving -0.642857143 + x = -0.726327075 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.642857143' to each side of the equation. -0.642857143 + 0.642857143 + x = -0.726327075 + 0.642857143 Combine like terms: -0.642857143 + 0.642857143 = 0.000000000 0.000000000 + x = -0.726327075 + 0.642857143 x = -0.726327075 + 0.642857143 Combine like terms: -0.726327075 + 0.642857143 = -0.083469932 x = -0.083469932 Simplifying x = -0.083469932

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.369184218, -0.083469932}

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