21y^2-19y+5=

Simple and best practice solution for 21y^2-19y+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 21y^2-19y+5= equation:


Simplifying
21y2 + -19y + 5 = 0

Reorder the terms:
5 + -19y + 21y2 = 0

Solving
5 + -19y + 21y2 = 0

Solving for variable 'y'.

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

Divide each side by '21'.
0.2380952381 + -0.9047619048y + y2 = 0

Move the constant term to the right:

Add '-0.2380952381' to each side of the equation.
0.2380952381 + -0.9047619048y + -0.2380952381 + y2 = 0 + -0.2380952381

Reorder the terms:
0.2380952381 + -0.2380952381 + -0.9047619048y + y2 = 0 + -0.2380952381

Combine like terms: 0.2380952381 + -0.2380952381 = 0.0000000000
0.0000000000 + -0.9047619048y + y2 = 0 + -0.2380952381
-0.9047619048y + y2 = 0 + -0.2380952381

Combine like terms: 0 + -0.2380952381 = -0.2380952381
-0.9047619048y + y2 = -0.2380952381

The y term is -0.9047619048y.  Take half its coefficient (-0.4523809524).
Square it (0.2046485261) and add it to both sides.

Add '0.2046485261' to each side of the equation.
-0.9047619048y + 0.2046485261 + y2 = -0.2380952381 + 0.2046485261

Reorder the terms:
0.2046485261 + -0.9047619048y + y2 = -0.2380952381 + 0.2046485261

Combine like terms: -0.2380952381 + 0.2046485261 = -0.033446712
0.2046485261 + -0.9047619048y + y2 = -0.033446712

Factor a perfect square on the left side:
(y + -0.4523809524)(y + -0.4523809524) = -0.033446712

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| b(b+6)=0 | | 25r^2+60r+27= | | (16a+2b)(16a^2+2b^2)= | | 5x-15=2x+21 | | 2[t-(4t+18)+16]=2(t+2) | | (16a^3)+(2b^2)= | | a+6-a+836242-724=13835 | | a+6-a+836242-724=138352 | | a+6-a+836242-724=13835241738373 | | a+6-a+836242-724=13 | | 16a^3+2b^3= | | 7x+14=5x+11 | | 4w^2+28w=0 | | (28b-7)-9(3b+2)=-6 | | 2[t-(4t+16)+10]=2(t+6) | | 27x^4-48x^2y^2= | | 2[w-(2w+3)+2]=2(w+1) | | 2(8+5)=116 | | 2(x-1)+7(3-x)=10 | | 2(4x^2-49)=3(4x^2+28x+49) | | 1.75x-4.5=7.75 | | 5a+7=180 | | 4s^2+24s+27= | | -8y+5=-9y+4 | | 42=14n/14 | | 12=.15x | | 5p+8=15+4p | | 1x+10=30 | | -(2d+3)=12 | | 3x-3=2x+9 | | a^8xb^8= | | 8K-2K=18 |

Equations solver categories