4.9x^2+330x-3300=0

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Solution for 4.9x^2+330x-3300=0 equation:


Simplifying
4.9x2 + 330x + -3300 = 0

Reorder the terms:
-3300 + 330x + 4.9x2 = 0

Solving
-3300 + 330x + 4.9x2 = 0

Solving for variable 'x'.

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

Divide each side by '4.9'.
-673.4693878 + 67.34693878x + x2 = 0

Move the constant term to the right:

Add '673.4693878' to each side of the equation.
-673.4693878 + 67.34693878x + 673.4693878 + x2 = 0 + 673.4693878

Reorder the terms:
-673.4693878 + 673.4693878 + 67.34693878x + x2 = 0 + 673.4693878

Combine like terms: -673.4693878 + 673.4693878 = 0.0000000
0.0000000 + 67.34693878x + x2 = 0 + 673.4693878
67.34693878x + x2 = 0 + 673.4693878

Combine like terms: 0 + 673.4693878 = 673.4693878
67.34693878x + x2 = 673.4693878

The x term is 67.34693878x.  Take half its coefficient (33.67346939).
Square it (1133.902541) and add it to both sides.

Add '1133.902541' to each side of the equation.
67.34693878x + 1133.902541 + x2 = 673.4693878 + 1133.902541

Reorder the terms:
1133.902541 + 67.34693878x + x2 = 673.4693878 + 1133.902541

Combine like terms: 673.4693878 + 1133.902541 = 1807.3719288
1133.902541 + 67.34693878x + x2 = 1807.3719288

Factor a perfect square on the left side:
(x + 33.67346939)(x + 33.67346939) = 1807.3719288

Calculate the square root of the right side: 42.513197113

Break this problem into two subproblems by setting 
(x + 33.67346939) equal to 42.513197113 and -42.513197113.

Subproblem 1

x + 33.67346939 = 42.513197113 Simplifying x + 33.67346939 = 42.513197113 Reorder the terms: 33.67346939 + x = 42.513197113 Solving 33.67346939 + x = 42.513197113 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-33.67346939' to each side of the equation. 33.67346939 + -33.67346939 + x = 42.513197113 + -33.67346939 Combine like terms: 33.67346939 + -33.67346939 = 0.00000000 0.00000000 + x = 42.513197113 + -33.67346939 x = 42.513197113 + -33.67346939 Combine like terms: 42.513197113 + -33.67346939 = 8.839727723 x = 8.839727723 Simplifying x = 8.839727723

Subproblem 2

x + 33.67346939 = -42.513197113 Simplifying x + 33.67346939 = -42.513197113 Reorder the terms: 33.67346939 + x = -42.513197113 Solving 33.67346939 + x = -42.513197113 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-33.67346939' to each side of the equation. 33.67346939 + -33.67346939 + x = -42.513197113 + -33.67346939 Combine like terms: 33.67346939 + -33.67346939 = 0.00000000 0.00000000 + x = -42.513197113 + -33.67346939 x = -42.513197113 + -33.67346939 Combine like terms: -42.513197113 + -33.67346939 = -76.186666503 x = -76.186666503 Simplifying x = -76.186666503

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.839727723, -76.186666503}

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