Question

Using an identity evaluate (a) (-2p+3q)square

Answer 1

• (-2p + 3q)²

= (-2p + 3q)(-2p + 3q)

= -2p(-2p + 3q) + 3q(-2p + 3q)

= 4p² - 6pq - 6pq + 9q²

= 4p² - 12pq + 9q²