Answer:
sqrt(80)
sqrt(18)
sqrt(12)
Step-by-step explanation:
sqrt(196) = 14 which is rational.
7/18 is a fraction. There is nothing the matter with it. It is rational.
sqrt(80) = sqrt(16 * 5) = sqrt(4*4* 5) = 4 sqrt(5) which is irrational.
sqrt(18) = sqrt(9*2) = sqrt(3*3*2) = 3*sqrt(2) which is irrational.
sqrt(12) = 2sqrt(3) which is irrational
Rule: if there is anything left under the root sign then the starting number is irrational.
