Question

8) Find the following products.
(i) 3a(a - 3)
(ii) -3x?(2x + 7)
(iii) 10y(0.02x2 -0.02y) (iv) 3a (6a +7)
3
v
+
4.
(vii) 3a (2a2-4) (viii) 2x (2x - 4y?)
-2 3
(ix) -X - X+ (x) 1.5a(0.5a2 - 1.5b2)
3 4
(xi) 3.4p(79-0.3r) (xii) 0.01a(0.19 +0.001b)

Answer 1

Answer:

i) 3a(a-3)

= 3a²-9a

vii) 3a(2a²-4)

= 6a³-12a