5r^2-12r+11=0

Simple and best practice solution for 5r^2-12r+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 5r^2-12r+11=0 equation:


Simplifying
5r2 + -12r + 11 = 0

Reorder the terms:
11 + -12r + 5r2 = 0

Solving
11 + -12r + 5r2 = 0

Solving for variable 'r'.

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

Divide each side by '5'.
2.2 + -2.4r + r2 = 0

Move the constant term to the right:

Add '-2.2' to each side of the equation.
2.2 + -2.4r + -2.2 + r2 = 0 + -2.2

Reorder the terms:
2.2 + -2.2 + -2.4r + r2 = 0 + -2.2

Combine like terms: 2.2 + -2.2 = 0.0
0.0 + -2.4r + r2 = 0 + -2.2
-2.4r + r2 = 0 + -2.2

Combine like terms: 0 + -2.2 = -2.2
-2.4r + r2 = -2.2

The r term is -2.4r.  Take half its coefficient (-1.2).
Square it (1.44) and add it to both sides.

Add '1.44' to each side of the equation.
-2.4r + 1.44 + r2 = -2.2 + 1.44

Reorder the terms:
1.44 + -2.4r + r2 = -2.2 + 1.44

Combine like terms: -2.2 + 1.44 = -0.76
1.44 + -2.4r + r2 = -0.76

Factor a perfect square on the left side:
(r + -1.2)(r + -1.2) = -0.76

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| P=50+-4Q | | Y=-2*-9 | | 11x-8-5=54 | | 0.5-9x=9x+1.8 | | 5r^2-12r+35=0 | | A=3.14*2x^2 | | 3r^2-12r+35=0 | | X^2-22x-40=0 | | 6-9/8y | | -10k-8=-6k | | Y=-2*4 | | -8y-25=9y | | 7x+1=6-3x | | 10+5c=4c-20 | | 10+2(2)=2(2)+15 | | X-69=6/9 | | -32m=15 | | 10d=9d+7 | | 2(7+x)+7(x+7)=14(7x+1) | | 7x-5=3x+16 | | X+25-Y=180 | | 61=7x+5x+1 | | -3t=-9-6t | | 4(3x-2)=45 | | z=3z-10 | | 7-2x=-4 | | 8+2z-8=-5z+1 | | -2x=84 | | 2(x+4)=3(1-x) | | x+x+3x-4=51 | | 8/3=9/n | | -(-4x)=9 |

Equations solver categories