Question

7p^2+18pq-9q^2 factorisation​

Answer 1

Step-by-step explanation:

7p²+18pq-9q²

7*9=63

3 | 63 | 21

____63_____

0

now 7p²+(21-3)pq-9q²

7p²+21pq-3pq-9q²

7p(p+3q)-3q(p+3q)

(p+3q)(7p-3q)

that's it