2n^2-2n-73=0

Simple and best practice solution for 2n^2-2n-73=0 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^2-2n-73=0 equation:


Simplifying
2n2 + -2n + -73 = 0

Reorder the terms:
-73 + -2n + 2n2 = 0

Solving
-73 + -2n + 2n2 = 0

Solving for variable 'n'.

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

Divide each side by '2'.
-36.5 + -1n + n2 = 0

Move the constant term to the right:

Add '36.5' to each side of the equation.
-36.5 + -1n + 36.5 + n2 = 0 + 36.5

Reorder the terms:
-36.5 + 36.5 + -1n + n2 = 0 + 36.5

Combine like terms: -36.5 + 36.5 = 0.0
0.0 + -1n + n2 = 0 + 36.5
-1n + n2 = 0 + 36.5

Combine like terms: 0 + 36.5 = 36.5
-1n + n2 = 36.5

The n term is -1n.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1n + 0.25 + n2 = 36.5 + 0.25

Reorder the terms:
0.25 + -1n + n2 = 36.5 + 0.25

Combine like terms: 36.5 + 0.25 = 36.75
0.25 + -1n + n2 = 36.75

Factor a perfect square on the left side:
(n + -0.5)(n + -0.5) = 36.75

Calculate the square root of the right side: 6.062177826

Break this problem into two subproblems by setting 
(n + -0.5) equal to 6.062177826 and -6.062177826.

Subproblem 1

n + -0.5 = 6.062177826 Simplifying n + -0.5 = 6.062177826 Reorder the terms: -0.5 + n = 6.062177826 Solving -0.5 + n = 6.062177826 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + n = 6.062177826 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + n = 6.062177826 + 0.5 n = 6.062177826 + 0.5 Combine like terms: 6.062177826 + 0.5 = 6.562177826 n = 6.562177826 Simplifying n = 6.562177826

Subproblem 2

n + -0.5 = -6.062177826 Simplifying n + -0.5 = -6.062177826 Reorder the terms: -0.5 + n = -6.062177826 Solving -0.5 + n = -6.062177826 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + n = -6.062177826 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + n = -6.062177826 + 0.5 n = -6.062177826 + 0.5 Combine like terms: -6.062177826 + 0.5 = -5.562177826 n = -5.562177826 Simplifying n = -5.562177826

Solution

The solution to the problem is based on the solutions from the subproblems. n = {6.562177826, -5.562177826}

See similar equations:

| 3k+4(4-5k)=135 | | -5x-2=58 | | (x+2)+(3x-4)+5=15 | | 90-(7x+10)=7(x+5)+x | | 19-3t=1 | | 6x-90=2x-18 | | 2x^2=-8-1 | | (17x-7)+20x+(12x-17)+15x=360 | | G(x)=12-5(x) | | 7.5=5x/2 | | 7y+5y-2= | | 8=3b+20 | | x+4y-z=2 | | 7/4W=7/12 | | 8x=7-3y | | 3/4x-14=6 | | 60=w+19 | | 8x+5y+7x= | | x+x+8=16 | | 3x-3=4.5 | | 69/5°c/40 | | -x^2+3x-2=-6 | | X/5x-7 | | 3x+14+2x-13=180 | | 3a-20=2a | | a(6b-b)= | | f(x)=5ln(2x)-4ln(x) | | -x^2+x-3=-5 | | 5x+3x+10=90 | | 6+3n=n-2 | | 9x+6x-12=72 | | 3secx-2=cosx |

Equations solver categories