r^2-6r=-8

Simple and best practice solution for r^2-6r=-8 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 r^2-6r=-8 equation:


Simplifying
r2 + -6r = -8

Reorder the terms:
-6r + r2 = -8

Solving
-6r + r2 = -8

Solving for variable 'r'.

Reorder the terms:
8 + -6r + r2 = -8 + 8

Combine like terms: -8 + 8 = 0
8 + -6r + r2 = 0

Factor a trinomial.
(2 + -1r)(4 + -1r) = 0

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 '(4 + -1r)' equal to zero and attempt to solve: Simplifying 4 + -1r = 0 Solving 4 + -1r = 0 Move all terms containing r to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1r = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1r = 0 + -4 -1r = 0 + -4 Combine like terms: 0 + -4 = -4 -1r = -4 Divide each side by '-1'. r = 4 Simplifying r = 4

Solution

r = {2, 4}

See similar equations:

| m^2+16=10m | | 6y=2y+16 | | 3x+2(-2)=8 | | -9x^2+15x=4 | | 2(3a+1)=5 | | y^1*y^2+2xy*y^1=4y | | X-[600+13]=10000 | | 3a/9=2 | | 24x-35=4x^2 | | x^2-24x+35=0 | | 2x-y-5=o | | x^2-24+35=0 | | 3a/9-4=-2 | | 5/9(8) | | 2+5(2a+3)=4-2a | | 6b+17=35 | | 5ln(2x+8)=24 | | 3=4c+5-2(x+1) | | 3x-7-2x=3 | | 3a+2(1a+4)=6-2a | | 12x-(12+4x)= | | y-2(.5y)=0 | | 2a+3(2a+1)=5 | | 2x-(12+4x)= | | X^4-24x^3+128x^2+384x-624=0 | | 2a+3(3a+1)=5 | | X^4-24d^3+128d^2+384d-624=0 | | yp+yn=r | | 5x+24(x-3)=102 | | B=3h/h | | x^2/64-x-1=0 | | 3(2x-5)=5 |

Equations solver categories