Answer:
x = 
Step-by-step explanation:

(subtract
from both sides)
or 
Answer:
1
Step-by-step explanation:
all numbers have the multiple of 1 so the least common multiple is 1, you dont have to write that meany down.
Answer:
Step-by-step explanation:
The sum of two irrational numbers is always still irrational.
5√3 + 6√5 is still going to be irrational. You cannot find two such numbers adding to rational.
Answer:
3x^2+17x+20
Step-by-step explanation: