Proof by contadiction.
Let assume there exist such positive integers and whose sum is a prime number , that their greatest common divisor is greater than 1.
Since is a prime number and , then , but we assumed earlier that , and there are no two positive integers that sum up to 1.
q.e.d.
x={1+i√19 , 1-i√19}
solve this by using quadratic formula
Answer:
the right anawer is A
44 cups
