-16x^2+99x+122=0

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Solution for -16x^2+99x+122=0 equation:


Simplifying
-16x2 + 99x + 122 = 0

Reorder the terms:
122 + 99x + -16x2 = 0

Solving
122 + 99x + -16x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-7.625 + -6.1875x + x2 = 0

Move the constant term to the right:

Add '7.625' to each side of the equation.
-7.625 + -6.1875x + 7.625 + x2 = 0 + 7.625

Reorder the terms:
-7.625 + 7.625 + -6.1875x + x2 = 0 + 7.625

Combine like terms: -7.625 + 7.625 = 0.000
0.000 + -6.1875x + x2 = 0 + 7.625
-6.1875x + x2 = 0 + 7.625

Combine like terms: 0 + 7.625 = 7.625
-6.1875x + x2 = 7.625

The x term is -6.1875x.  Take half its coefficient (-3.09375).
Square it (9.571289063) and add it to both sides.

Add '9.571289063' to each side of the equation.
-6.1875x + 9.571289063 + x2 = 7.625 + 9.571289063

Reorder the terms:
9.571289063 + -6.1875x + x2 = 7.625 + 9.571289063

Combine like terms: 7.625 + 9.571289063 = 17.196289063
9.571289063 + -6.1875x + x2 = 17.196289063

Factor a perfect square on the left side:
(x + -3.09375)(x + -3.09375) = 17.196289063

Calculate the square root of the right side: 4.146840853

Break this problem into two subproblems by setting 
(x + -3.09375) equal to 4.146840853 and -4.146840853.

Subproblem 1

x + -3.09375 = 4.146840853 Simplifying x + -3.09375 = 4.146840853 Reorder the terms: -3.09375 + x = 4.146840853 Solving -3.09375 + x = 4.146840853 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.09375' to each side of the equation. -3.09375 + 3.09375 + x = 4.146840853 + 3.09375 Combine like terms: -3.09375 + 3.09375 = 0.00000 0.00000 + x = 4.146840853 + 3.09375 x = 4.146840853 + 3.09375 Combine like terms: 4.146840853 + 3.09375 = 7.240590853 x = 7.240590853 Simplifying x = 7.240590853

Subproblem 2

x + -3.09375 = -4.146840853 Simplifying x + -3.09375 = -4.146840853 Reorder the terms: -3.09375 + x = -4.146840853 Solving -3.09375 + x = -4.146840853 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.09375' to each side of the equation. -3.09375 + 3.09375 + x = -4.146840853 + 3.09375 Combine like terms: -3.09375 + 3.09375 = 0.00000 0.00000 + x = -4.146840853 + 3.09375 x = -4.146840853 + 3.09375 Combine like terms: -4.146840853 + 3.09375 = -1.053090853 x = -1.053090853 Simplifying x = -1.053090853

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.240590853, -1.053090853}

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