-2-5n=-5n^2

Simple and best practice solution for -2-5n=-5n^2 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 -2-5n=-5n^2 equation:


Simplifying
-2 + -5n = -5n2

Solving
-2 + -5n = -5n2

Solving for variable 'n'.

Combine like terms: -5n2 + 5n2 = 0
-2 + -5n + 5n2 = 0

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

Divide each side by '5'.
-0.4 + -1n + n2 = 0

Move the constant term to the right:

Add '0.4' to each side of the equation.
-0.4 + -1n + 0.4 + n2 = 0 + 0.4

Reorder the terms:
-0.4 + 0.4 + -1n + n2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + -1n + n2 = 0 + 0.4
-1n + n2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
-1n + n2 = 0.4

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 = 0.4 + 0.25

Reorder the terms:
0.25 + -1n + n2 = 0.4 + 0.25

Combine like terms: 0.4 + 0.25 = 0.65
0.25 + -1n + n2 = 0.65

Factor a perfect square on the left side:
(n + -0.5)(n + -0.5) = 0.65

Calculate the square root of the right side: 0.806225775

Break this problem into two subproblems by setting 
(n + -0.5) equal to 0.806225775 and -0.806225775.

Subproblem 1

n + -0.5 = 0.806225775 Simplifying n + -0.5 = 0.806225775 Reorder the terms: -0.5 + n = 0.806225775 Solving -0.5 + n = 0.806225775 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 = 0.806225775 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + n = 0.806225775 + 0.5 n = 0.806225775 + 0.5 Combine like terms: 0.806225775 + 0.5 = 1.306225775 n = 1.306225775 Simplifying n = 1.306225775

Subproblem 2

n + -0.5 = -0.806225775 Simplifying n + -0.5 = -0.806225775 Reorder the terms: -0.5 + n = -0.806225775 Solving -0.5 + n = -0.806225775 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 = -0.806225775 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + n = -0.806225775 + 0.5 n = -0.806225775 + 0.5 Combine like terms: -0.806225775 + 0.5 = -0.306225775 n = -0.306225775 Simplifying n = -0.306225775

Solution

The solution to the problem is based on the solutions from the subproblems. n = {1.306225775, -0.306225775}

See similar equations:

| 3x+9/15=6 | | 8x^2+8xy-20y=0 | | -x+9=1/3(-9x+6)+1 | | -3(3r+3)=5-7r | | 5x-1-4x=x+17 | | 16-7*2= | | N^2+6=5N | | -3n+9+8n=7n-8n-9 | | 12x+2=4x-22 | | n+7/4=7/20 | | 5x=5/8 | | (4y-1)+(2x+5)=180 | | 6n-2=6n-7 | | 6w^2+24w-72=0 | | A^2-3A-3=5 | | 2x-16-x=x-16 | | 5x^2+24=0 | | 3y^2+51y+90=0 | | 3x=24*0.5 | | 3x+9/15=16 | | 8-9x=80 | | -x^2=36 | | -6x-10=-4x-14 | | 2x-21-x=x-21 | | 3xx-1=x+4 | | -9x-8=x-48 | | 37=5-x+3x | | -4/3t=-16 | | 3x?-1=x+4 | | 5y^2-45y+70=0 | | 17x-3=8x | | 5x-7=6x-11 |

Equations solver categories