Question

Ex,5. सरल करें
(i) 15a2-6a (a-2)+a(3+7a)​

Answer 1

Answer:

$15a ^{2} - 6a(a - 2) + a(3 + 7a) \\ \\ = 15a ^{2} - 6a ^{2} + 12a + 3a + 21a ^{2} \\ \\ = 15a ^{2} - 6a ^{2} + 21a ^{2} + 12a + 3a \\ \\ = 9a ^{2} + 21a ^{2} + 15a \\ \\ = 30a ^{2} + 15a \\ \\ = 15a(2a + 1)$

hope it helps uH ✔