8y^2-4y+7=0

Simple and best practice solution for 8y^2-4y+7=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 8y^2-4y+7=0 equation:


Simplifying
8y2 + -4y + 7 = 0

Reorder the terms:
7 + -4y + 8y2 = 0

Solving
7 + -4y + 8y2 = 0

Solving for variable 'y'.

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

Divide each side by '8'.
0.875 + -0.5y + y2 = 0

Move the constant term to the right:

Add '-0.875' to each side of the equation.
0.875 + -0.5y + -0.875 + y2 = 0 + -0.875

Reorder the terms:
0.875 + -0.875 + -0.5y + y2 = 0 + -0.875

Combine like terms: 0.875 + -0.875 = 0.000
0.000 + -0.5y + y2 = 0 + -0.875
-0.5y + y2 = 0 + -0.875

Combine like terms: 0 + -0.875 = -0.875
-0.5y + y2 = -0.875

The y term is -0.5y.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5y + 0.0625 + y2 = -0.875 + 0.0625

Reorder the terms:
0.0625 + -0.5y + y2 = -0.875 + 0.0625

Combine like terms: -0.875 + 0.0625 = -0.8125
0.0625 + -0.5y + y2 = -0.8125

Factor a perfect square on the left side:
(y + -0.25)(y + -0.25) = -0.8125

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 3x-10x-3x=-26 | | 0,5*x+4=x | | 40=20t+t^2 | | 0=-70+40t+5t^2 | | 0=-70 | | 5x^1/5*6x^1/3 | | 6x-12=33+3x-12 | | -3(3y-8)-y=-4(y-4) | | 37x+5=6(6x+3) | | 2x-7x+6=x-5+11 | | y=-16x^2+35x+20 | | 9n-26=-18+5n | | m-2.4=5.3 | | f(x)=x^3-4x^2+4x-16 | | 0.132/0.22 | | -12x^2+11x-3=0 | | 11-4=7+14h | | 394.98/0.026 | | 8x-24=18+x | | 347.94/8 | | 70=40t+5t^2 | | 4h=45min | | 32cm=4m | | 3/5x+4/2x+12=15/3x+7/5x+12 | | 62+9x=63+8x | | y=4x+27 | | 7(n-6)=7 | | 7n-6=7 | | 92+9x=100+7x | | 25x-2=75x-202 | | 60=4x-12-2x | | 78+8x=80+7x |

Equations solver categories