Question

if p+pq is 4 times p-pq, which of the following has exactly one value? (pq does not = 0) a)p b)q c)pq d)p+pq e)p-pq

Answer 1

P+pq＝4p+4pq

5pq＝3p

5q＝3
q＝3/5
Answer is b