7x^2-45x-32=0

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Solution for 7x^2-45x-32=0 equation:


Simplifying
7x2 + -45x + -32 = 0

Reorder the terms:
-32 + -45x + 7x2 = 0

Solving
-32 + -45x + 7x2 = 0

Solving for variable 'x'.

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

Divide each side by '7'.
-4.571428571 + -6.428571429x + x2 = 0

Move the constant term to the right:

Add '4.571428571' to each side of the equation.
-4.571428571 + -6.428571429x + 4.571428571 + x2 = 0 + 4.571428571

Reorder the terms:
-4.571428571 + 4.571428571 + -6.428571429x + x2 = 0 + 4.571428571

Combine like terms: -4.571428571 + 4.571428571 = 0.000000000
0.000000000 + -6.428571429x + x2 = 0 + 4.571428571
-6.428571429x + x2 = 0 + 4.571428571

Combine like terms: 0 + 4.571428571 = 4.571428571
-6.428571429x + x2 = 4.571428571

The x term is -6.428571429x.  Take half its coefficient (-3.214285715).
Square it (10.33163266) and add it to both sides.

Add '10.33163266' to each side of the equation.
-6.428571429x + 10.33163266 + x2 = 4.571428571 + 10.33163266

Reorder the terms:
10.33163266 + -6.428571429x + x2 = 4.571428571 + 10.33163266

Combine like terms: 4.571428571 + 10.33163266 = 14.903061231
10.33163266 + -6.428571429x + x2 = 14.903061231

Factor a perfect square on the left side:
(x + -3.214285715)(x + -3.214285715) = 14.903061231

Calculate the square root of the right side: 3.86044832

Break this problem into two subproblems by setting 
(x + -3.214285715) equal to 3.86044832 and -3.86044832.

Subproblem 1

x + -3.214285715 = 3.86044832 Simplifying x + -3.214285715 = 3.86044832 Reorder the terms: -3.214285715 + x = 3.86044832 Solving -3.214285715 + x = 3.86044832 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.214285715' to each side of the equation. -3.214285715 + 3.214285715 + x = 3.86044832 + 3.214285715 Combine like terms: -3.214285715 + 3.214285715 = 0.000000000 0.000000000 + x = 3.86044832 + 3.214285715 x = 3.86044832 + 3.214285715 Combine like terms: 3.86044832 + 3.214285715 = 7.074734035 x = 7.074734035 Simplifying x = 7.074734035

Subproblem 2

x + -3.214285715 = -3.86044832 Simplifying x + -3.214285715 = -3.86044832 Reorder the terms: -3.214285715 + x = -3.86044832 Solving -3.214285715 + x = -3.86044832 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.214285715' to each side of the equation. -3.214285715 + 3.214285715 + x = -3.86044832 + 3.214285715 Combine like terms: -3.214285715 + 3.214285715 = 0.000000000 0.000000000 + x = -3.86044832 + 3.214285715 x = -3.86044832 + 3.214285715 Combine like terms: -3.86044832 + 3.214285715 = -0.646162605 x = -0.646162605 Simplifying x = -0.646162605

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.074734035, -0.646162605}

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