2n^2+20n-36=6

Simple and best practice solution for 2n^2+20n-36=6 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 2n^2+20n-36=6 equation:


Simplifying
2n2 + 20n + -36 = 6

Reorder the terms:
-36 + 20n + 2n2 = 6

Solving
-36 + 20n + 2n2 = 6

Solving for variable 'n'.

Reorder the terms:
-36 + -6 + 20n + 2n2 = 6 + -6

Combine like terms: -36 + -6 = -42
-42 + 20n + 2n2 = 6 + -6

Combine like terms: 6 + -6 = 0
-42 + 20n + 2n2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(-21 + 10n + n2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-21 + 10n + n2)' equal to zero and attempt to solve: Simplifying -21 + 10n + n2 = 0 Solving -21 + 10n + n2 = 0 Begin completing the square. Move the constant term to the right: Add '21' to each side of the equation. -21 + 10n + 21 + n2 = 0 + 21 Reorder the terms: -21 + 21 + 10n + n2 = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 10n + n2 = 0 + 21 10n + n2 = 0 + 21 Combine like terms: 0 + 21 = 21 10n + n2 = 21 The n term is 10n. Take half its coefficient (5). Square it (25) and add it to both sides. Add '25' to each side of the equation. 10n + 25 + n2 = 21 + 25 Reorder the terms: 25 + 10n + n2 = 21 + 25 Combine like terms: 21 + 25 = 46 25 + 10n + n2 = 46 Factor a perfect square on the left side: (n + 5)(n + 5) = 46 Calculate the square root of the right side: 6.782329983 Break this problem into two subproblems by setting (n + 5) equal to 6.782329983 and -6.782329983.

Subproblem 1

n + 5 = 6.782329983 Simplifying n + 5 = 6.782329983 Reorder the terms: 5 + n = 6.782329983 Solving 5 + n = 6.782329983 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + n = 6.782329983 + -5 Combine like terms: 5 + -5 = 0 0 + n = 6.782329983 + -5 n = 6.782329983 + -5 Combine like terms: 6.782329983 + -5 = 1.782329983 n = 1.782329983 Simplifying n = 1.782329983

Subproblem 2

n + 5 = -6.782329983 Simplifying n + 5 = -6.782329983 Reorder the terms: 5 + n = -6.782329983 Solving 5 + n = -6.782329983 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + n = -6.782329983 + -5 Combine like terms: 5 + -5 = 0 0 + n = -6.782329983 + -5 n = -6.782329983 + -5 Combine like terms: -6.782329983 + -5 = -11.782329983 n = -11.782329983 Simplifying n = -11.782329983

Solution

The solution to the problem is based on the solutions from the subproblems. n = {1.782329983, -11.782329983}

Solution

n = {1.782329983, -11.782329983}

See similar equations:

| 4.9-0.1(2.5)= | | 9x+16=21x+28 | | 3(y-10)+1=xy-8x | | 1-3x=-x-15 | | n/72=5/45 | | b+96=106 | | -7/4x=5/8 | | 4v=2v+10 | | 700=3.14y^2 | | 4x+1=-7x+100 | | 9x+2x-3x= | | 4(x+7+2x)=-2(1-x) | | 325/830 | | 6/54=n/72 | | 4v=54-2v | | 830/325 | | n/72=4/36 | | 0.5(2.5)+6.4= | | 5x+(-9)=7x+6+(-2x) | | 5/20=n/48 | | -3(4-5x)-4-10x=3x-6 | | 62x(3)(4)=74 | | 5x+2=4x+13 | | -k-(-6)=4 | | 6*x+20=8 | | 355-30/830 | | -2x+2=-28-5x | | X+10=10-3x | | n/54=3/27 | | n/70=4/28 | | 2x-83=11x+97 | | q/5=q/10 |

Equations solver categories