Which expression is equivalent to (x+3)^3-9x(x+3)? a. X^3-9x^2+27x+27
b. x^3-9x^2-27x+27
c. x^3+27
d. x^3-27

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)