15y^2-15y+7=0

Simple and best practice solution for 15y^2-15y+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 15y^2-15y+7=0 equation:


Simplifying
15y2 + -15y + 7 = 0

Reorder the terms:
7 + -15y + 15y2 = 0

Solving
7 + -15y + 15y2 = 0

Solving for variable 'y'.

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

Divide each side by '15'.
0.4666666667 + -1y + y2 = 0

Move the constant term to the right:

Add '-0.4666666667' to each side of the equation.
0.4666666667 + -1y + -0.4666666667 + y2 = 0 + -0.4666666667

Reorder the terms:
0.4666666667 + -0.4666666667 + -1y + y2 = 0 + -0.4666666667

Combine like terms: 0.4666666667 + -0.4666666667 = 0.0000000000
0.0000000000 + -1y + y2 = 0 + -0.4666666667
-1y + y2 = 0 + -0.4666666667

Combine like terms: 0 + -0.4666666667 = -0.4666666667
-1y + y2 = -0.4666666667

The y term is -1y.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1y + 0.25 + y2 = -0.4666666667 + 0.25

Reorder the terms:
0.25 + -1y + y2 = -0.4666666667 + 0.25

Combine like terms: -0.4666666667 + 0.25 = -0.2166666667
0.25 + -1y + y2 = -0.2166666667

Factor a perfect square on the left side:
(y + -0.5)(y + -0.5) = -0.2166666667

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 2p(6p-18)=0 | | (x-9)(2x+4)=0 | | 25x^2/(5x-2) | | 7x-3=67forx | | 12x+72-30= | | 3h^2+6h=0 | | -3/7x=-6 | | f(5)=(2x-8) | | 16x^4+22x^3-4x^2= | | 4x^2-1x+1=0 | | 3x√35/7 | | 6m^5/2m^2 | | 2(X-15)=X/2 | | f(4)=(2x-8) | | 4x^2-1=63 | | f(1/3)=3x-1 | | 5x×2=210/3 | | 7r(p+4q)-5(p+4q)= | | .002=(4/3)3.14*r^3 | | 2[w-(3w+14)+8]=2(w+6) | | -10+6f=110 | | (x+4)(x-4)(x-9)= | | f(3)=(2x-8) | | 7m(m-1)=4(m-1) | | 4r(p-7q)+3(p-7q)= | | (1/2)(116-x)=20 | | f(2)=3x-1 | | -5(v+3)+2v+5=8v+8 | | 7x^2+7y^2-28x+42y-35=0 | | 9.1/(x-5.7)=1.4 | | X-9=-5-9 | | 5mn+5mp-2n-2p= |

Equations solver categories