Question

Let's write the value of pq by calculation if (2p - 3q ) = 10 and (8p³ - 27q³) = 100​

Answer 1

Answer:

-5

Step-by-step explanation:

(2p-3q)=10 (Given)

A/Q

(2p)³-(3q)³=100

(2p-3q)(4p²+9q²+6pq)=100

4p²+9q²+6pq=10

(2p-3q)²+18pq=10

100+18pq=10

18pq=-90

pq= -5

Answer 2

Answer:

(2p-3q)3=8p3-27q3-18pq (2p-3q)

(10)3=8p3-27q3-18pq×10

1000=100-180pq

180pq=100-1000

180pq=-900

pq=-900/180

pq=-5