n^2-14n+7=0

Simple and best practice solution for n^2-14n+7=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 n^2-14n+7=0 equation:


Simplifying
n2 + -14n + 7 = 0

Reorder the terms:
7 + -14n + n2 = 0

Solving
7 + -14n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '-7' to each side of the equation.
7 + -14n + -7 + n2 = 0 + -7

Reorder the terms:
7 + -7 + -14n + n2 = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -14n + n2 = 0 + -7
-14n + n2 = 0 + -7

Combine like terms: 0 + -7 = -7
-14n + n2 = -7

The n term is -14n.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14n + 49 + n2 = -7 + 49

Reorder the terms:
49 + -14n + n2 = -7 + 49

Combine like terms: -7 + 49 = 42
49 + -14n + n2 = 42

Factor a perfect square on the left side:
(n + -7)(n + -7) = 42

Calculate the square root of the right side: 6.480740698

Break this problem into two subproblems by setting 
(n + -7) equal to 6.480740698 and -6.480740698.

Subproblem 1

n + -7 = 6.480740698 Simplifying n + -7 = 6.480740698 Reorder the terms: -7 + n = 6.480740698 Solving -7 + n = 6.480740698 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + n = 6.480740698 + 7 Combine like terms: -7 + 7 = 0 0 + n = 6.480740698 + 7 n = 6.480740698 + 7 Combine like terms: 6.480740698 + 7 = 13.480740698 n = 13.480740698 Simplifying n = 13.480740698

Subproblem 2

n + -7 = -6.480740698 Simplifying n + -7 = -6.480740698 Reorder the terms: -7 + n = -6.480740698 Solving -7 + n = -6.480740698 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + n = -6.480740698 + 7 Combine like terms: -7 + 7 = 0 0 + n = -6.480740698 + 7 n = -6.480740698 + 7 Combine like terms: -6.480740698 + 7 = 0.519259302 n = 0.519259302 Simplifying n = 0.519259302

Solution

The solution to the problem is based on the solutions from the subproblems. n = {13.480740698, 0.519259302}

See similar equations:

| X-(X*.049)=15 | | 5y-7=12y+35 | | 10+y+3=4y-13 | | x^2=1/4 | | 4/3x=-2 | | ((xy^2)^(4/7)(x^4y^4)^(1/7))/(x^(5/7)y^(5/7)) | | 18-69=4a-(a+3) | | 2(9-10)=40 | | 14x=400.4 | | 5/7x-14=-2 | | 4(-3+1)=-32 | | 2a-8+2=4a+6 | | 6(x-5)=3(5x-13) | | d+-4=-7 | | 40=3x | | -2x+4y-(-2x+3y)=1-1 | | 6+(8*x+12)= | | 1000=(x*.20)+x | | (4x+8)+12=4 | | AB=8x+7 | | 3x-8+5x-17=14x-27+3x | | (X+2)-(3x+4)=x | | (2x-5)=x+4 | | 2x+x=3y+8 | | 3*(y*y)+y=6 | | 4(7w+14)=28 | | -10y-15-y=-4y-8 | | R=3a^2+b | | 8+x=4x+6-2x | | 6.7x-3.7=3.0 | | (2w-5)=13 | | 3y+y=6 |

Equations solver categories