7x^2+16x=192

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Solution for 7x^2+16x=192 equation:


Simplifying
7x2 + 16x = 192

Reorder the terms:
16x + 7x2 = 192

Solving
16x + 7x2 = 192

Solving for variable 'x'.

Reorder the terms:
-192 + 16x + 7x2 = 192 + -192

Combine like terms: 192 + -192 = 0
-192 + 16x + 7x2 = 0

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

Divide each side by '7'.
-27.42857143 + 2.285714286x + x2 = 0

Move the constant term to the right:

Add '27.42857143' to each side of the equation.
-27.42857143 + 2.285714286x + 27.42857143 + x2 = 0 + 27.42857143

Reorder the terms:
-27.42857143 + 27.42857143 + 2.285714286x + x2 = 0 + 27.42857143

Combine like terms: -27.42857143 + 27.42857143 = 0.00000000
0.00000000 + 2.285714286x + x2 = 0 + 27.42857143
2.285714286x + x2 = 0 + 27.42857143

Combine like terms: 0 + 27.42857143 = 27.42857143
2.285714286x + x2 = 27.42857143

The x term is 2.285714286x.  Take half its coefficient (1.142857143).
Square it (1.306122449) and add it to both sides.

Add '1.306122449' to each side of the equation.
2.285714286x + 1.306122449 + x2 = 27.42857143 + 1.306122449

Reorder the terms:
1.306122449 + 2.285714286x + x2 = 27.42857143 + 1.306122449

Combine like terms: 27.42857143 + 1.306122449 = 28.734693879
1.306122449 + 2.285714286x + x2 = 28.734693879

Factor a perfect square on the left side:
(x + 1.142857143)(x + 1.142857143) = 28.734693879

Calculate the square root of the right side: 5.360475154

Break this problem into two subproblems by setting 
(x + 1.142857143) equal to 5.360475154 and -5.360475154.

Subproblem 1

x + 1.142857143 = 5.360475154 Simplifying x + 1.142857143 = 5.360475154 Reorder the terms: 1.142857143 + x = 5.360475154 Solving 1.142857143 + x = 5.360475154 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.142857143' to each side of the equation. 1.142857143 + -1.142857143 + x = 5.360475154 + -1.142857143 Combine like terms: 1.142857143 + -1.142857143 = 0.000000000 0.000000000 + x = 5.360475154 + -1.142857143 x = 5.360475154 + -1.142857143 Combine like terms: 5.360475154 + -1.142857143 = 4.217618011 x = 4.217618011 Simplifying x = 4.217618011

Subproblem 2

x + 1.142857143 = -5.360475154 Simplifying x + 1.142857143 = -5.360475154 Reorder the terms: 1.142857143 + x = -5.360475154 Solving 1.142857143 + x = -5.360475154 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.142857143' to each side of the equation. 1.142857143 + -1.142857143 + x = -5.360475154 + -1.142857143 Combine like terms: 1.142857143 + -1.142857143 = 0.000000000 0.000000000 + x = -5.360475154 + -1.142857143 x = -5.360475154 + -1.142857143 Combine like terms: -5.360475154 + -1.142857143 = -6.503332297 x = -6.503332297 Simplifying x = -6.503332297

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.217618011, -6.503332297}

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