4r^2-r+11=0

Simple and best practice solution for 4r^2-r+11=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 4r^2-r+11=0 equation:


Simplifying
4r2 + -1r + 11 = 0

Reorder the terms:
11 + -1r + 4r2 = 0

Solving
11 + -1r + 4r2 = 0

Solving for variable 'r'.

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

Divide each side by '4'.
2.75 + -0.25r + r2 = 0

Move the constant term to the right:

Add '-2.75' to each side of the equation.
2.75 + -0.25r + -2.75 + r2 = 0 + -2.75

Reorder the terms:
2.75 + -2.75 + -0.25r + r2 = 0 + -2.75

Combine like terms: 2.75 + -2.75 = 0.00
0.00 + -0.25r + r2 = 0 + -2.75
-0.25r + r2 = 0 + -2.75

Combine like terms: 0 + -2.75 = -2.75
-0.25r + r2 = -2.75

The r term is -0.25r.  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.
-0.25r + 0.015625 + r2 = -2.75 + 0.015625

Reorder the terms:
0.015625 + -0.25r + r2 = -2.75 + 0.015625

Combine like terms: -2.75 + 0.015625 = -2.734375
0.015625 + -0.25r + r2 = -2.734375

Factor a perfect square on the left side:
(r + -0.125)(r + -0.125) = -2.734375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 4x-2(x-1)=8 | | 8x-30=62+6x | | 9+8x=0 | | 4x^3+7x^2-x-2=0 | | -2+3y=-10x+24 | | C+6.95=17.15 | | -6x-12+3x=27 | | 2x+6=10x+4 | | B=4.5a-12 | | X-3=-6+4x | | -s=-11.2 | | 50x^2+250=40x^2+350 | | X^3-2x^3-5x+6=0 | | -8.4=6f | | 13.7=b+-5.1 | | 184=8(10+c) | | a=-10+20B | | 7z-1=3z-9 | | 4x+8=1x+9 | | 3w=12.3 | | -2x+2x=6x-6 | | -15q=4(q-3)-7 | | 4(2x-2)+10=3x-8 | | .080*.93= | | -8=x-35 | | 13times-7=-91 | | (6+7)-2=a | | 301=7p | | (6+7)-2= | | H-826=-195 | | 15=-(-8n+5)-4(6n+3) | | 18+7r=6r+8(r-4) |

Equations solver categories