625=(n-1)*n

Simple and best practice solution for 625=(n-1)*n 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 625=(n-1)*n equation:


Simplifying
625 = (n + -1) * n

Reorder the terms:
625 = (-1 + n) * n

Reorder the terms for easier multiplication:
625 = n(-1 + n)
625 = (-1 * n + n * n)
625 = (-1n + n2)

Solving
625 = -1n + n2

Solving for variable 'n'.

Reorder the terms:
625 + n + -1n2 = -1n + n + n2 + -1n2

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

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

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-625 + -1n + n2 = 0

Move the constant term to the right:

Add '625' to each side of the equation.
-625 + -1n + 625 + n2 = 0 + 625

Reorder the terms:
-625 + 625 + -1n + n2 = 0 + 625

Combine like terms: -625 + 625 = 0
0 + -1n + n2 = 0 + 625
-1n + n2 = 0 + 625

Combine like terms: 0 + 625 = 625
-1n + n2 = 625

The n term is n.  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 = 625 + 0.25

Reorder the terms:
0.25 + -1n + n2 = 625 + 0.25

Combine like terms: 625 + 0.25 = 625.25
0.25 + -1n + n2 = 625.25

Factor a perfect square on the left side:
(n + 0.5)(n + 0.5) = 625.25

Calculate the square root of the right side: 25.0049995

Break this problem into two subproblems by setting 
(n + 0.5) equal to 25.0049995 and -25.0049995.

Subproblem 1

n + 0.5 = 25.0049995 Simplifying n + 0.5 = 25.0049995 Reorder the terms: 0.5 + n = 25.0049995 Solving 0.5 + n = 25.0049995 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 = 25.0049995 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + n = 25.0049995 + -0.5 n = 25.0049995 + -0.5 Combine like terms: 25.0049995 + -0.5 = 24.5049995 n = 24.5049995 Simplifying n = 24.5049995

Subproblem 2

n + 0.5 = -25.0049995 Simplifying n + 0.5 = -25.0049995 Reorder the terms: 0.5 + n = -25.0049995 Solving 0.5 + n = -25.0049995 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 = -25.0049995 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + n = -25.0049995 + -0.5 n = -25.0049995 + -0.5 Combine like terms: -25.0049995 + -0.5 = -25.5049995 n = -25.5049995 Simplifying n = -25.5049995

Solution

The solution to the problem is based on the solutions from the subproblems. n = {24.5049995, -25.5049995}

See similar equations:

| 0=320t-16t^2 | | 2ln(3x+8)=18 | | (4c-8d)(4c-8d)(4c-8d)= | | x+42=-18 | | -(m+5n-12)= | | 0=t(320-16t) | | N^2-n-625=0 | | -7f-9=12 | | -8y^2+8y-2=0 | | 0.333y-5=-19 | | -(m+4n-11)= | | -3(4f+3)+4(6f+1)=43 | | 3+2x=-2(x+3) | | -20.1p-4(-2.3-5p)=8.4 | | -3k^2+6k-3=0 | | (5x-y)dx+3x*dy=0 | | -2(3G-7)=31-2G | | -200+-32m+216=-66+5m+202+-9m+m | | 12=-7f-8 | | 12x+9x=84 | | 200-32m+216=-66+5m+202-9m+m | | 7(1-4x)=7-5x | | 3a-2=18 | | -(m+8n-12)= | | -9q-4-q+7=17-10a-4a+6 | | 3x-11-7x=9x+3+x | | 0.20x+0.25(50)=26.5 | | (5x-y)dx+3xdy=0 | | G-6=16-10g | | -(m+5n-15)= | | Xy^2=18 | | -6x-30=-6(5+x) |

Equations solver categories