2n^2+11n+18=0

Simple and best practice solution for 2n^2+11n+18=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 2n^2+11n+18=0 equation:


Simplifying
2n2 + 11n + 18 = 0

Reorder the terms:
18 + 11n + 2n2 = 0

Solving
18 + 11n + 2n2 = 0

Solving for variable 'n'.

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

Divide each side by '2'.
9 + 5.5n + n2 = 0

Move the constant term to the right:

Add '-9' to each side of the equation.
9 + 5.5n + -9 + n2 = 0 + -9

Reorder the terms:
9 + -9 + 5.5n + n2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 5.5n + n2 = 0 + -9
5.5n + n2 = 0 + -9

Combine like terms: 0 + -9 = -9
5.5n + n2 = -9

The n term is 5.5n.  Take half its coefficient (2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
5.5n + 7.5625 + n2 = -9 + 7.5625

Reorder the terms:
7.5625 + 5.5n + n2 = -9 + 7.5625

Combine like terms: -9 + 7.5625 = -1.4375
7.5625 + 5.5n + n2 = -1.4375

Factor a perfect square on the left side:
(n + 2.75)(n + 2.75) = -1.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| x-5/7-x+8/9=8x-5/12 | | 98765x=90876543 | | 4q-3q=21 | | 4q+3=23 | | 7x-4=21+2x | | 6=-2x+(-3) | | 6.2x=12.4 | | 3q-4=20 | | (2x-1)-(6x-9)=-4 | | 5-(t+3)=t+2(t-3) | | 3n+5=n | | 5x^7-5=50 | | 2/2=d/10 | | 4x+10=-23 | | n/100=4/40 | | 5q-9-6=-1.25 | | 4/28=n/70 | | 5q-9-6= | | 2x/5+2=14 | | 4/2=g/16 | | 86=14-(5x+8) | | 8-3x-6+8x=-13 | | 13x-10x=12 | | 2(9+x)=40 | | 10y+5y=45 | | N-4=-24 | | M-4=-24 | | 2Y-14=14 | | 10x+10x+6x+8+6x+8=2 | | 11=-d+5 | | -33=K-17 | | 3n+5=12 |

Equations solver categories