The domain is the set of all possible x-values which will make the function "work", and will output real y-values. When finding the domain, remember: The denominator (bottom) of a fraction cannot be zero. The number under a square root sign must be positive in this section
8(x - 6) = 4x Distribute. 8x - 48 = 4x Subtract 8x from both sides. 8x -8x - 48 =4x -8x Now you have... -48 = -4x Divide -4 by both sides. -48/-4 = -4x/-4 12 = x The number is 12.
