Factor the polynomial completely x^2 + 18

At which value in the domain does f(x) =0?

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.

Rick is driving to his uncles house in greenville,which is 120 miles from ricks town .after covering x miles rick she's a sign stating that greensville is 20 miles away. which equation when solved will give the value of x. a: x+120 = 20 b: x x120 =20 c: x +20 equals 120 d: x x20= 120