99w^2-9w+8=999

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Solution for 99w^2-9w+8=999 equation:


Simplifying
99w2 + -9w + 8 = 999

Reorder the terms:
8 + -9w + 99w2 = 999

Solving
8 + -9w + 99w2 = 999

Solving for variable 'w'.

Reorder the terms:
8 + -999 + -9w + 99w2 = 999 + -999

Combine like terms: 8 + -999 = -991
-991 + -9w + 99w2 = 999 + -999

Combine like terms: 999 + -999 = 0
-991 + -9w + 99w2 = 0

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

Divide each side by '99'.
-10.01010101 + -0.09090909091w + w2 = 0

Move the constant term to the right:

Add '10.01010101' to each side of the equation.
-10.01010101 + -0.09090909091w + 10.01010101 + w2 = 0 + 10.01010101

Reorder the terms:
-10.01010101 + 10.01010101 + -0.09090909091w + w2 = 0 + 10.01010101

Combine like terms: -10.01010101 + 10.01010101 = 0.00000000
0.00000000 + -0.09090909091w + w2 = 0 + 10.01010101
-0.09090909091w + w2 = 0 + 10.01010101

Combine like terms: 0 + 10.01010101 = 10.01010101
-0.09090909091w + w2 = 10.01010101

The w term is -0.09090909091w.  Take half its coefficient (-0.04545454546).
Square it (0.002066115703) and add it to both sides.

Add '0.002066115703' to each side of the equation.
-0.09090909091w + 0.002066115703 + w2 = 10.01010101 + 0.002066115703

Reorder the terms:
0.002066115703 + -0.09090909091w + w2 = 10.01010101 + 0.002066115703

Combine like terms: 10.01010101 + 0.002066115703 = 10.012167125703
0.002066115703 + -0.09090909091w + w2 = 10.012167125703

Factor a perfect square on the left side:
(w + -0.04545454546)(w + -0.04545454546) = 10.012167125703

Calculate the square root of the right side: 3.164200867

Break this problem into two subproblems by setting 
(w + -0.04545454546) equal to 3.164200867 and -3.164200867.

Subproblem 1

w + -0.04545454546 = 3.164200867 Simplifying w + -0.04545454546 = 3.164200867 Reorder the terms: -0.04545454546 + w = 3.164200867 Solving -0.04545454546 + w = 3.164200867 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.04545454546' to each side of the equation. -0.04545454546 + 0.04545454546 + w = 3.164200867 + 0.04545454546 Combine like terms: -0.04545454546 + 0.04545454546 = 0.00000000000 0.00000000000 + w = 3.164200867 + 0.04545454546 w = 3.164200867 + 0.04545454546 Combine like terms: 3.164200867 + 0.04545454546 = 3.20965541246 w = 3.20965541246 Simplifying w = 3.20965541246

Subproblem 2

w + -0.04545454546 = -3.164200867 Simplifying w + -0.04545454546 = -3.164200867 Reorder the terms: -0.04545454546 + w = -3.164200867 Solving -0.04545454546 + w = -3.164200867 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.04545454546' to each side of the equation. -0.04545454546 + 0.04545454546 + w = -3.164200867 + 0.04545454546 Combine like terms: -0.04545454546 + 0.04545454546 = 0.00000000000 0.00000000000 + w = -3.164200867 + 0.04545454546 w = -3.164200867 + 0.04545454546 Combine like terms: -3.164200867 + 0.04545454546 = -3.11874632154 w = -3.11874632154 Simplifying w = -3.11874632154

Solution

The solution to the problem is based on the solutions from the subproblems. w = {3.20965541246, -3.11874632154}

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