7x^2+96x-175=0

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Solution for 7x^2+96x-175=0 equation:


Simplifying
7x2 + 96x + -175 = 0

Reorder the terms:
-175 + 96x + 7x2 = 0

Solving
-175 + 96x + 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'.
-25 + 13.71428571x + x2 = 0

Move the constant term to the right:

Add '25' to each side of the equation.
-25 + 13.71428571x + 25 + x2 = 0 + 25

Reorder the terms:
-25 + 25 + 13.71428571x + x2 = 0 + 25

Combine like terms: -25 + 25 = 0
0 + 13.71428571x + x2 = 0 + 25
13.71428571x + x2 = 0 + 25

Combine like terms: 0 + 25 = 25
13.71428571x + x2 = 25

The x term is 13.71428571x.  Take half its coefficient (6.857142855).
Square it (47.02040813) and add it to both sides.

Add '47.02040813' to each side of the equation.
13.71428571x + 47.02040813 + x2 = 25 + 47.02040813

Reorder the terms:
47.02040813 + 13.71428571x + x2 = 25 + 47.02040813

Combine like terms: 25 + 47.02040813 = 72.02040813
47.02040813 + 13.71428571x + x2 = 72.02040813

Factor a perfect square on the left side:
(x + 6.857142855)(x + 6.857142855) = 72.02040813

Calculate the square root of the right side: 8.48648385

Break this problem into two subproblems by setting 
(x + 6.857142855) equal to 8.48648385 and -8.48648385.

Subproblem 1

x + 6.857142855 = 8.48648385 Simplifying x + 6.857142855 = 8.48648385 Reorder the terms: 6.857142855 + x = 8.48648385 Solving 6.857142855 + x = 8.48648385 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.857142855' to each side of the equation. 6.857142855 + -6.857142855 + x = 8.48648385 + -6.857142855 Combine like terms: 6.857142855 + -6.857142855 = 0.000000000 0.000000000 + x = 8.48648385 + -6.857142855 x = 8.48648385 + -6.857142855 Combine like terms: 8.48648385 + -6.857142855 = 1.629340995 x = 1.629340995 Simplifying x = 1.629340995

Subproblem 2

x + 6.857142855 = -8.48648385 Simplifying x + 6.857142855 = -8.48648385 Reorder the terms: 6.857142855 + x = -8.48648385 Solving 6.857142855 + x = -8.48648385 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.857142855' to each side of the equation. 6.857142855 + -6.857142855 + x = -8.48648385 + -6.857142855 Combine like terms: 6.857142855 + -6.857142855 = 0.000000000 0.000000000 + x = -8.48648385 + -6.857142855 x = -8.48648385 + -6.857142855 Combine like terms: -8.48648385 + -6.857142855 = -15.343626705 x = -15.343626705 Simplifying x = -15.343626705

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.629340995, -15.343626705}

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