3s^2+320s-1960=0

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Solution for 3s^2+320s-1960=0 equation:


Simplifying
3s2 + 320s + -1960 = 0

Reorder the terms:
-1960 + 320s + 3s2 = 0

Solving
-1960 + 320s + 3s2 = 0

Solving for variable 's'.

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

Divide each side by '3'.
-653.3333333 + 106.6666667s + s2 = 0

Move the constant term to the right:

Add '653.3333333' to each side of the equation.
-653.3333333 + 106.6666667s + 653.3333333 + s2 = 0 + 653.3333333

Reorder the terms:
-653.3333333 + 653.3333333 + 106.6666667s + s2 = 0 + 653.3333333

Combine like terms: -653.3333333 + 653.3333333 = 0.0000000
0.0000000 + 106.6666667s + s2 = 0 + 653.3333333
106.6666667s + s2 = 0 + 653.3333333

Combine like terms: 0 + 653.3333333 = 653.3333333
106.6666667s + s2 = 653.3333333

The s term is 106.6666667s.  Take half its coefficient (53.33333335).
Square it (2844.444446) and add it to both sides.

Add '2844.444446' to each side of the equation.
106.6666667s + 2844.444446 + s2 = 653.3333333 + 2844.444446

Reorder the terms:
2844.444446 + 106.6666667s + s2 = 653.3333333 + 2844.444446

Combine like terms: 653.3333333 + 2844.444446 = 3497.7777793
2844.444446 + 106.6666667s + s2 = 3497.7777793

Factor a perfect square on the left side:
(s + 53.33333335)(s + 53.33333335) = 3497.7777793

Calculate the square root of the right side: 59.142013656

Break this problem into two subproblems by setting 
(s + 53.33333335) equal to 59.142013656 and -59.142013656.

Subproblem 1

s + 53.33333335 = 59.142013656 Simplifying s + 53.33333335 = 59.142013656 Reorder the terms: 53.33333335 + s = 59.142013656 Solving 53.33333335 + s = 59.142013656 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-53.33333335' to each side of the equation. 53.33333335 + -53.33333335 + s = 59.142013656 + -53.33333335 Combine like terms: 53.33333335 + -53.33333335 = 0.00000000 0.00000000 + s = 59.142013656 + -53.33333335 s = 59.142013656 + -53.33333335 Combine like terms: 59.142013656 + -53.33333335 = 5.808680306 s = 5.808680306 Simplifying s = 5.808680306

Subproblem 2

s + 53.33333335 = -59.142013656 Simplifying s + 53.33333335 = -59.142013656 Reorder the terms: 53.33333335 + s = -59.142013656 Solving 53.33333335 + s = -59.142013656 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-53.33333335' to each side of the equation. 53.33333335 + -53.33333335 + s = -59.142013656 + -53.33333335 Combine like terms: 53.33333335 + -53.33333335 = 0.00000000 0.00000000 + s = -59.142013656 + -53.33333335 s = -59.142013656 + -53.33333335 Combine like terms: -59.142013656 + -53.33333335 = -112.475347006 s = -112.475347006 Simplifying s = -112.475347006

Solution

The solution to the problem is based on the solutions from the subproblems. s = {5.808680306, -112.475347006}

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