Answers

2014-11-07T15:18:34+05:30
(2a +5 )( 3a -6)

6 a^2 - 12 a + 15 a - 30  
 [because ,  2a is multiplied with 3a , 2a is multiplied with -6 , +5 is multiplied with 3a and +5 is multiplied with -6]


6 a^2 + 3 a - 30   (answer)
[because , -12a  is subtracted from +15a]
0
Sry I cant understand
why
Ya now I got it thanx
i have explained it
hope it helps
2014-11-07T15:19:35+05:30
= 6a2 + 3a – 30
= 3(2a2 + a – 10)




0
6a^2 + 3a - 30
3(2a^2 + a - 10)
its simple .......just multiply each term of 1st bracket with every term of second bracket
2a (3a - 6) + 5(3a - 6)
Thanx