Question

Find the product:
(i) (5 – 2x) (3 + x)
(ii) (x + 7y) (7x – y)
(iii) (a2 + b) (a + b2)
(iv) (p2 – q2)(2p + q)

Answer 1

a ) ( 5 - 2x ) ( 3 + x )

15 + 5x - 6x - 2x²

15 - x - 2x²

b ) ( x + 7y ) ( 7x - y )

7x² - xy + 49xy - 7y²

7x² + 48xy - 7y²

c ) ( a²+ b ) ( a + b² )

expand : a³ + ab + b³ + ( ab ) ²

d ) ( p² - q² ) ( 2p + q )

evaluate : ( 2p + q ) ( p² - q² )

expand : 2p³ - 2pq² - q³ + qp²

hope helpful for you