5n^2-2n-1000=0

Simple and best practice solution for 5n^2-2n-1000=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 5n^2-2n-1000=0 equation:


Simplifying
5n2 + -2n + -1000 = 0

Reorder the terms:
-1000 + -2n + 5n2 = 0

Solving
-1000 + -2n + 5n2 = 0

Solving for variable 'n'.

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

Divide each side by '5'.
-200 + -0.4n + n2 = 0

Move the constant term to the right:

Add '200' to each side of the equation.
-200 + -0.4n + 200 + n2 = 0 + 200

Reorder the terms:
-200 + 200 + -0.4n + n2 = 0 + 200

Combine like terms: -200 + 200 = 0
0 + -0.4n + n2 = 0 + 200
-0.4n + n2 = 0 + 200

Combine like terms: 0 + 200 = 200
-0.4n + n2 = 200

The n term is -0.4n.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4n + 0.04 + n2 = 200 + 0.04

Reorder the terms:
0.04 + -0.4n + n2 = 200 + 0.04

Combine like terms: 200 + 0.04 = 200.04
0.04 + -0.4n + n2 = 200.04

Factor a perfect square on the left side:
(n + -0.2)(n + -0.2) = 200.04

Calculate the square root of the right side: 14.143549767

Break this problem into two subproblems by setting 
(n + -0.2) equal to 14.143549767 and -14.143549767.

Subproblem 1

n + -0.2 = 14.143549767 Simplifying n + -0.2 = 14.143549767 Reorder the terms: -0.2 + n = 14.143549767 Solving -0.2 + n = 14.143549767 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + n = 14.143549767 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + n = 14.143549767 + 0.2 n = 14.143549767 + 0.2 Combine like terms: 14.143549767 + 0.2 = 14.343549767 n = 14.343549767 Simplifying n = 14.343549767

Subproblem 2

n + -0.2 = -14.143549767 Simplifying n + -0.2 = -14.143549767 Reorder the terms: -0.2 + n = -14.143549767 Solving -0.2 + n = -14.143549767 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '0.2' to each side of the equation. -0.2 + 0.2 + n = -14.143549767 + 0.2 Combine like terms: -0.2 + 0.2 = 0.0 0.0 + n = -14.143549767 + 0.2 n = -14.143549767 + 0.2 Combine like terms: -14.143549767 + 0.2 = -13.943549767 n = -13.943549767 Simplifying n = -13.943549767

Solution

The solution to the problem is based on the solutions from the subproblems. n = {14.343549767, -13.943549767}

See similar equations:

| -10x-3=-10-3x | | 4x-10=4x+k | | T-1/5=1-4 | | 0.04x+0.09*(100000-x)=3000 | | a*5+b=0 | | 5+4(5x-6)=7-5(2x+1) | | 30=-7(5r+6) | | N+M=4 | | (X)(x+1)=5x | | 6w+w=35 | | -y+2(5+y)=27 | | 4x=3m-1 | | 3p-6=2p+9 | | 4130+2=50 | | dy/dx=x^2/1-y^2 | | 12-36=c | | 5x-18=2x+12 | | 2p/8 | | 24=m-6 | | 5/9•1/2 | | 5y-2=2-y | | 3(y-c)=3y+7 | | -20+4y=0 | | 7.50+40=F | | 10cos^2x+3sinx-9=0 | | 20x+.10=30x | | 2(9h+3)-4h=34 | | X+72=2x+40 | | 21=m-5 | | 3(3(0)-7)=-30 | | -3/4times4 | | 5[3-x]+2x=-3-3+2x |

Equations solver categories