n^2-8n-79=6

Simple and best practice solution for n^2-8n-79=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 n^2-8n-79=6 equation:


Simplifying
n2 + -8n + -79 = 6

Reorder the terms:
-79 + -8n + n2 = 6

Solving
-79 + -8n + n2 = 6

Solving for variable 'n'.

Reorder the terms:
-79 + -6 + -8n + n2 = 6 + -6

Combine like terms: -79 + -6 = -85
-85 + -8n + n2 = 6 + -6

Combine like terms: 6 + -6 = 0
-85 + -8n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '85' to each side of the equation.
-85 + -8n + 85 + n2 = 0 + 85

Reorder the terms:
-85 + 85 + -8n + n2 = 0 + 85

Combine like terms: -85 + 85 = 0
0 + -8n + n2 = 0 + 85
-8n + n2 = 0 + 85

Combine like terms: 0 + 85 = 85
-8n + n2 = 85

The n term is -8n.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8n + 16 + n2 = 85 + 16

Reorder the terms:
16 + -8n + n2 = 85 + 16

Combine like terms: 85 + 16 = 101
16 + -8n + n2 = 101

Factor a perfect square on the left side:
(n + -4)(n + -4) = 101

Calculate the square root of the right side: 10.049875621

Break this problem into two subproblems by setting 
(n + -4) equal to 10.049875621 and -10.049875621.

Subproblem 1

n + -4 = 10.049875621 Simplifying n + -4 = 10.049875621 Reorder the terms: -4 + n = 10.049875621 Solving -4 + n = 10.049875621 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + n = 10.049875621 + 4 Combine like terms: -4 + 4 = 0 0 + n = 10.049875621 + 4 n = 10.049875621 + 4 Combine like terms: 10.049875621 + 4 = 14.049875621 n = 14.049875621 Simplifying n = 14.049875621

Subproblem 2

n + -4 = -10.049875621 Simplifying n + -4 = -10.049875621 Reorder the terms: -4 + n = -10.049875621 Solving -4 + n = -10.049875621 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + n = -10.049875621 + 4 Combine like terms: -4 + 4 = 0 0 + n = -10.049875621 + 4 n = -10.049875621 + 4 Combine like terms: -10.049875621 + 4 = -6.049875621 n = -6.049875621 Simplifying n = -6.049875621

Solution

The solution to the problem is based on the solutions from the subproblems. n = {14.049875621, -6.049875621}

See similar equations:

| 6m-4-m=2m-4+m | | -20-3x=-5 | | z-89=99 | | 3652=44(p+25) | | X^2+.5X+.0625=0 | | 6(4x+7)=24x-3 | | (2x-4)(4x+7)=0 | | -x-6+3x=62+2x | | x^4-6x^3+9x^2+4x-72=0 | | 1/tan(x/3)/3 | | a+36=123 | | (25+p)*44=3652 | | e-36=133 | | -1/2x-(-3)=8 | | X^3+2x^2=11x+12 | | px+tx=c | | 2x^3+4x^2=3x+6 | | -3*x+(-12)=15 | | 8(1y+4)-2(1y-1)=70-3y | | 0=6.9495+-9.8(t) | | 15*(4.10+8.20+x)=197.25 | | 3x^4=15x^3 | | 350x-5x^2=50x+10x^2 | | n^2-10n-62=-6 | | 2x*x-9+2=0 | | 2x*x-9x+2=0 | | (6-36i)/(6-i) | | 12-5y+4=-y-5+3y | | 40x=-1200 | | 15x^2-300x=0 | | 0=25X-8 | | 25.4+x=32 |

Equations solver categories