n^2-4n-4=-2.5

Simple and best practice solution for n^2-4n-4=-2.5 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^2-4n-4=-2.5 equation:


Simplifying
n2 + -4n + -4 = -2.5

Reorder the terms:
-4 + -4n + n2 = -2.5

Solving
-4 + -4n + n2 = -2.5

Solving for variable 'n'.

Reorder the terms:
-4 + 2.5 + -4n + n2 = -2.5 + 2.5

Combine like terms: -4 + 2.5 = -1.5
-1.5 + -4n + n2 = -2.5 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
-1.5 + -4n + n2 = 0.0

Begin completing the square.

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + -4n + 1.5 + n2 = 0.0 + 1.5

Reorder the terms:
-1.5 + 1.5 + -4n + n2 = 0.0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -4n + n2 = 0.0 + 1.5
-4n + n2 = 0.0 + 1.5

Combine like terms: 0.0 + 1.5 = 1.5
-4n + n2 = 1.5

The n term is -4n.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4n + 4 + n2 = 1.5 + 4

Reorder the terms:
4 + -4n + n2 = 1.5 + 4

Combine like terms: 1.5 + 4 = 5.5
4 + -4n + n2 = 5.5

Factor a perfect square on the left side:
(n + -2)(n + -2) = 5.5

Calculate the square root of the right side: 2.34520788

Break this problem into two subproblems by setting 
(n + -2) equal to 2.34520788 and -2.34520788.

Subproblem 1

n + -2 = 2.34520788 Simplifying n + -2 = 2.34520788 Reorder the terms: -2 + n = 2.34520788 Solving -2 + n = 2.34520788 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + n = 2.34520788 + 2 Combine like terms: -2 + 2 = 0 0 + n = 2.34520788 + 2 n = 2.34520788 + 2 Combine like terms: 2.34520788 + 2 = 4.34520788 n = 4.34520788 Simplifying n = 4.34520788

Subproblem 2

n + -2 = -2.34520788 Simplifying n + -2 = -2.34520788 Reorder the terms: -2 + n = -2.34520788 Solving -2 + n = -2.34520788 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + n = -2.34520788 + 2 Combine like terms: -2 + 2 = 0 0 + n = -2.34520788 + 2 n = -2.34520788 + 2 Combine like terms: -2.34520788 + 2 = -0.34520788 n = -0.34520788 Simplifying n = -0.34520788

Solution

The solution to the problem is based on the solutions from the subproblems. n = {4.34520788, -0.34520788}

See similar equations:

| 3b-6=0 | | 4x+9y=-1 | | 5d+25=10b+5 | | 0=x^3+8x^2+20x+16 | | 10m+5=55 | | (6x-14)=14 | | X+1=-x+(-5) | | 3(7c-1)-12=19c+3 | | -3m+15.88-2.25=-17.48 | | 2+y=17-4y | | 6(2.3x-7)+(4x+11)= | | b+7=.5b+17 | | -11d+8=-13d-10 | | 9+(x+-9)= | | 22750.00+200.00x=312.50x | | 5r+1=26 | | -19z=-18z+4 | | -18q-19=11-20q | | 22750.00+200.00x=312.50 | | 1.75x+30=240 | | -7.8+19.44=-10v-19.94 | | -4y+3=-12 | | -4x+(-3)=-x+3 | | 6b^2+5b+1=0 | | 1.75+30=240 | | 15-9(2x-7)+3x-7=0 | | 13b+2=17b+20-b | | 5(x-2)+12=52 | | (5y^2-7y)+(4y^2+y-2)= | | 14s=-19+15s | | 12-3y=-15 | | 12a+2b=1500 |

Equations solver categories