7x^2+32x-45=0

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


Simplifying
7x2 + 32x + -45 = 0

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

Solving
-45 + 32x + 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'.
-6.428571429 + 4.571428571x + x2 = 0

Move the constant term to the right:

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

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

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

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

The x term is 4.571428571x.  Take half its coefficient (2.285714286).
Square it (5.224489797) and add it to both sides.

Add '5.224489797' to each side of the equation.
4.571428571x + 5.224489797 + x2 = 6.428571429 + 5.224489797

Reorder the terms:
5.224489797 + 4.571428571x + x2 = 6.428571429 + 5.224489797

Combine like terms: 6.428571429 + 5.224489797 = 11.653061226
5.224489797 + 4.571428571x + x2 = 11.653061226

Factor a perfect square on the left side:
(x + 2.285714286)(x + 2.285714286) = 11.653061226

Calculate the square root of the right side: 3.413658042

Break this problem into two subproblems by setting 
(x + 2.285714286) equal to 3.413658042 and -3.413658042.

Subproblem 1

x + 2.285714286 = 3.413658042 Simplifying x + 2.285714286 = 3.413658042 Reorder the terms: 2.285714286 + x = 3.413658042 Solving 2.285714286 + x = 3.413658042 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.285714286' to each side of the equation. 2.285714286 + -2.285714286 + x = 3.413658042 + -2.285714286 Combine like terms: 2.285714286 + -2.285714286 = 0.000000000 0.000000000 + x = 3.413658042 + -2.285714286 x = 3.413658042 + -2.285714286 Combine like terms: 3.413658042 + -2.285714286 = 1.127943756 x = 1.127943756 Simplifying x = 1.127943756

Subproblem 2

x + 2.285714286 = -3.413658042 Simplifying x + 2.285714286 = -3.413658042 Reorder the terms: 2.285714286 + x = -3.413658042 Solving 2.285714286 + x = -3.413658042 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.285714286' to each side of the equation. 2.285714286 + -2.285714286 + x = -3.413658042 + -2.285714286 Combine like terms: 2.285714286 + -2.285714286 = 0.000000000 0.000000000 + x = -3.413658042 + -2.285714286 x = -3.413658042 + -2.285714286 Combine like terms: -3.413658042 + -2.285714286 = -5.699372328 x = -5.699372328 Simplifying x = -5.699372328

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.127943756, -5.699372328}

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