3n(5+-3n)+8-3=

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Solution for 3n(5+-3n)+8-3= equation:


Simplifying
3n(5 + -3n) + 8 + -3 = 0
(5 * 3n + -3n * 3n) + 8 + -3 = 0
(15n + -9n2) + 8 + -3 = 0

Reorder the terms:
8 + -3 + 15n + -9n2 = 0

Combine like terms: 8 + -3 = 5
5 + 15n + -9n2 = 0

Solving
5 + 15n + -9n2 = 0

Solving for variable 'n'.

Begin completing the square.  Divide all terms by
-9 the coefficient of the squared term: 

Divide each side by '-9'.
-0.5555555556 + -1.666666667n + n2 = 0

Move the constant term to the right:

Add '0.5555555556' to each side of the equation.
-0.5555555556 + -1.666666667n + 0.5555555556 + n2 = 0 + 0.5555555556

Reorder the terms:
-0.5555555556 + 0.5555555556 + -1.666666667n + n2 = 0 + 0.5555555556

Combine like terms: -0.5555555556 + 0.5555555556 = 0.0000000000
0.0000000000 + -1.666666667n + n2 = 0 + 0.5555555556
-1.666666667n + n2 = 0 + 0.5555555556

Combine like terms: 0 + 0.5555555556 = 0.5555555556
-1.666666667n + n2 = 0.5555555556

The n term is -1.666666667n.  Take half its coefficient (-0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
-1.666666667n + 0.6944444447 + n2 = 0.5555555556 + 0.6944444447

Reorder the terms:
0.6944444447 + -1.666666667n + n2 = 0.5555555556 + 0.6944444447

Combine like terms: 0.5555555556 + 0.6944444447 = 1.2500000003
0.6944444447 + -1.666666667n + n2 = 1.2500000003

Factor a perfect square on the left side:
(n + -0.8333333335)(n + -0.8333333335) = 1.2500000003

Calculate the square root of the right side: 1.118033989

Break this problem into two subproblems by setting 
(n + -0.8333333335) equal to 1.118033989 and -1.118033989.

Subproblem 1

n + -0.8333333335 = 1.118033989 Simplifying n + -0.8333333335 = 1.118033989 Reorder the terms: -0.8333333335 + n = 1.118033989 Solving -0.8333333335 + n = 1.118033989 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + n = 1.118033989 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + n = 1.118033989 + 0.8333333335 n = 1.118033989 + 0.8333333335 Combine like terms: 1.118033989 + 0.8333333335 = 1.9513673225 n = 1.9513673225 Simplifying n = 1.9513673225

Subproblem 2

n + -0.8333333335 = -1.118033989 Simplifying n + -0.8333333335 = -1.118033989 Reorder the terms: -0.8333333335 + n = -1.118033989 Solving -0.8333333335 + n = -1.118033989 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.8333333335' to each side of the equation. -0.8333333335 + 0.8333333335 + n = -1.118033989 + 0.8333333335 Combine like terms: -0.8333333335 + 0.8333333335 = 0.0000000000 0.0000000000 + n = -1.118033989 + 0.8333333335 n = -1.118033989 + 0.8333333335 Combine like terms: -1.118033989 + 0.8333333335 = -0.2847006555 n = -0.2847006555 Simplifying n = -0.2847006555

Solution

The solution to the problem is based on the solutions from the subproblems. n = {1.9513673225, -0.2847006555}

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