Question

15) Find the product :-
(3a+ 5a -9) x ( 3a - 5)​

Answer 1

(9a-9) × (3a-5)

27a^2-45a - 27a + 45

27a^2- 72a +45

9(3a^2 - 8a + 5 )

(3a^2 - 8a + 5 )

3a^2 - 5a - 3a + 5

a( 3a - 5) - 1( 3a - 5)

( 3a - 5)or (a-1)

3a=5 or a=1

a= 5/3 or a= 1