Question
Let p and q be two real numbers such that p + q = 3 and p4 + q4 = 369. Then ${\left( {{1 \over p} + {1 \over q}} \right)^{ - 2}}$ is equal to _________.
Correct Answer
4
Let p and q be two real numbers such that p + q = 3 and p4 + q4 = 369. Then ${\left( {{1 \over p} + {1 \over q}} \right)^{ - 2}}$ is equal to _________.