8r^2-72r+112=0

Simple and best practice solution for 8r^2-72r+112=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 8r^2-72r+112=0 equation:


Simplifying
8r2 + -72r + 112 = 0

Reorder the terms:
112 + -72r + 8r2 = 0

Solving
112 + -72r + 8r2 = 0

Solving for variable 'r'.

Factor out the Greatest Common Factor (GCF), '8'.
8(14 + -9r + r2) = 0

Factor a trinomial.
8((2 + -1r)(7 + -1r)) = 0

Ignore the factor 8.

Subproblem 1

Set the factor '(2 + -1r)' equal to zero and attempt to solve: Simplifying 2 + -1r = 0 Solving 2 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1r = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1r = 0 + -2 -1r = 0 + -2 Combine like terms: 0 + -2 = -2 -1r = -2 Divide each side by '-1'. r = 2 Simplifying r = 2

Subproblem 2

Set the factor '(7 + -1r)' equal to zero and attempt to solve: Simplifying 7 + -1r = 0 Solving 7 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1r = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1r = 0 + -7 -1r = 0 + -7 Combine like terms: 0 + -7 = -7 -1r = -7 Divide each side by '-1'. r = 7 Simplifying r = 7

Solution

r = {2, 7}

See similar equations:

| -4(s+55)=-100 | | 2x+25=1015 | | 20/3n=26.67 | | 13+p=76 | | 4x(3x-9)= | | z^5+3=0 | | X/6=20/16 | | 11x+35+x+1=180 | | x+8(5)=37 | | -49^(1/2) | | -6x+7y=-5 | | 3/7n-8=8/3 | | H+(-17)=0 | | 5=20+3(x) | | K/5-20=4 | | (16n^2)3/2 | | -5(y-87)=-45 | | x/100=60/70 | | 180-56-31= | | 100+25x=35x | | z^5-3i=0 | | 5a+6-2a= | | X+(x+25)=1015 | | 2r(1/r-5) | | 576=208t-16t^2 | | -37=q-(-14) | | 6(3b+5)=75 | | 8n^2-24n+16=0 | | 250x-(150x+11000)=10000 | | 8x-2x-6=36 | | 5x+12=10+4x | | x+-1=3 |

Equations solver categories