8w^2+2w+21=0

Simple and best practice solution for 8w^2+2w+21=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 8w^2+2w+21=0 equation:


Simplifying
8w2 + 2w + 21 = 0

Reorder the terms:
21 + 2w + 8w2 = 0

Solving
21 + 2w + 8w2 = 0

Solving for variable 'w'.

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

Divide each side by '8'.
2.625 + 0.25w + w2 = 0

Move the constant term to the right:

Add '-2.625' to each side of the equation.
2.625 + 0.25w + -2.625 + w2 = 0 + -2.625

Reorder the terms:
2.625 + -2.625 + 0.25w + w2 = 0 + -2.625

Combine like terms: 2.625 + -2.625 = 0.000
0.000 + 0.25w + w2 = 0 + -2.625
0.25w + w2 = 0 + -2.625

Combine like terms: 0 + -2.625 = -2.625
0.25w + w2 = -2.625

The w term is 0.25w.  Take half its coefficient (0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
0.25w + 0.015625 + w2 = -2.625 + 0.015625

Reorder the terms:
0.015625 + 0.25w + w2 = -2.625 + 0.015625

Combine like terms: -2.625 + 0.015625 = -2.609375
0.015625 + 0.25w + w2 = -2.609375

Factor a perfect square on the left side:
(w + 0.125)(w + 0.125) = -2.609375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| .3p=7p-20 | | t+17=53 | | 12+4n=n | | 3x+8+6x=26 | | 25-.23(m)=17.18 | | m-1=4m-10 | | 1m-1=4m-10 | | 5+3y=20 | | 16-4x+3(2x-5)=31 | | 2x+4y-9+1-x+3x= | | 4(b+6)=6(b-6) | | 36x^2-363x+144=0 | | 6x^2-16=4x | | 5y^2-6y+1=0 | | -2d+28-4d=60 | | 13-3(7)= | | (x-1)(x+5)=8 | | 5+8m-2m+9=-12m-4 | | 486+0.03x=490+0.02x | | 5x=1-2x^2 | | 4x-5=4(x+4) | | 5r^3+30r^2=80r | | 5m-6m=6-7m | | 13-13-3d= | | 1-2x-5x=0 | | 9.5z=3.1z-46.72 | | -8-13= | | -5.6(3p+5)-2.4(4p-6)= | | 8-5(5-3x)=2x+9 | | .66y+6=15 | | -3x+2=-2(x-1) | | w^2-8=0 |

Equations solver categories