2nd and 4th are functions
an x value in a set of functions can only have one y value. however, a y value can have infinite amount of x values
in the 1st and 3rd set, the x value of -2 has 2 y values
"Mathematically yes - but from an engineering point no. And micro black holes are very unstable. They will evaporate extremely violently" hope this helps
It already is in disruptive property but to solve it using distributive property it become 3x+21.
-√6 (2 + √2)
-(2√6 + 2√3)
-2√6 + 2√3 <<< the answer.
hope that helps, God bless!