(n+7)(n+7)=-2n

Simple and best practice solution for (n+7)(n+7)=-2n 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+7)(n+7)=-2n equation:


Simplifying
(n + 7)(n + 7) = -2n

Reorder the terms:
(7 + n)(n + 7) = -2n

Reorder the terms:
(7 + n)(7 + n) = -2n

Multiply (7 + n) * (7 + n)
(7(7 + n) + n(7 + n)) = -2n
((7 * 7 + n * 7) + n(7 + n)) = -2n
((49 + 7n) + n(7 + n)) = -2n
(49 + 7n + (7 * n + n * n)) = -2n
(49 + 7n + (7n + n2)) = -2n

Combine like terms: 7n + 7n = 14n
(49 + 14n + n2) = -2n

Solving
49 + 14n + n2 = -2n

Solving for variable 'n'.

Reorder the terms:
49 + 14n + 2n + n2 = -2n + 2n

Combine like terms: 14n + 2n = 16n
49 + 16n + n2 = -2n + 2n

Combine like terms: -2n + 2n = 0
49 + 16n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-49' to each side of the equation.
49 + 16n + -49 + n2 = 0 + -49

Reorder the terms:
49 + -49 + 16n + n2 = 0 + -49

Combine like terms: 49 + -49 = 0
0 + 16n + n2 = 0 + -49
16n + n2 = 0 + -49

Combine like terms: 0 + -49 = -49
16n + n2 = -49

The n term is 16n.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16n + 64 + n2 = -49 + 64

Reorder the terms:
64 + 16n + n2 = -49 + 64

Combine like terms: -49 + 64 = 15
64 + 16n + n2 = 15

Factor a perfect square on the left side:
(n + 8)(n + 8) = 15

Calculate the square root of the right side: 3.872983346

Break this problem into two subproblems by setting 
(n + 8) equal to 3.872983346 and -3.872983346.

Subproblem 1

n + 8 = 3.872983346 Simplifying n + 8 = 3.872983346 Reorder the terms: 8 + n = 3.872983346 Solving 8 + n = 3.872983346 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + n = 3.872983346 + -8 Combine like terms: 8 + -8 = 0 0 + n = 3.872983346 + -8 n = 3.872983346 + -8 Combine like terms: 3.872983346 + -8 = -4.127016654 n = -4.127016654 Simplifying n = -4.127016654

Subproblem 2

n + 8 = -3.872983346 Simplifying n + 8 = -3.872983346 Reorder the terms: 8 + n = -3.872983346 Solving 8 + n = -3.872983346 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + n = -3.872983346 + -8 Combine like terms: 8 + -8 = 0 0 + n = -3.872983346 + -8 n = -3.872983346 + -8 Combine like terms: -3.872983346 + -8 = -11.872983346 n = -11.872983346 Simplifying n = -11.872983346

Solution

The solution to the problem is based on the solutions from the subproblems. n = {-4.127016654, -11.872983346}

See similar equations:

| N+12=37.5 | | -1/24x=1/12 | | 5/32x=3/16 | | 0=x^2+2x-167 | | 15cos(t)+3=0 | | 7x-9y=1 | | z+5-4z= | | 6w-7=-10+5w-7w | | x-2=27 | | 29-(-4)= | | (25x)=100 | | -6(-3m-5)=0 | | -120+5.50=45 | | 8x+3=4x+13 | | 3(2x-5)=2(15xX)-1 | | .2+.4+2x=6x-10 | | sin(6x)*cos(5x)+cos(6x)*sin(5x)=0 | | .2x+.4+2=6x-10 | | 28-3x=6x+18 | | 1.5(x+2)+2=6x-10 | | -(3x+5)=4 | | (4x+1)/3-(7x-12)/2+(3x-8)/4=(9x-114)/6 | | 4(x+8)-5=11 | | Y-(-6)=1/5(x-(-1)) | | 4(y-2)=3(3y+9) | | (6y/10)/(3/5x) | | -3x/20=-3/35 | | -4+7t=14+10t | | (24/64)^(1/3) | | x^2+81x-360= | | 6z-7=-2+2z | | 16^-3/4 |

Equations solver categories