Select all of the expressions that are each the expressions that are equivalent to 4(5*+2y)
9*+6y
4(5*)+4(2y)
20*+8y
20*+2y
4(7*y)

If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0