Question

write the expanded form of the following:-
a.) (3a+4b)^3
b.) (3a+ 4b+ 5c)^2​

Answer 1

Answer:

a. (3a+4b)(9a2-12ab+16b2)

b.9a2+16b2+25c2+24ab+40bc+30ac

Answer 2

Step-by-step explanation:

a)27a³+64b³+3(3a)(4b)[3a+4b]

=27a³+64b³+36ab [3a+4b]

=27a³+64b³+108a²b+144b²a

Identity-(a+b)³=a³+b³+3ab [a+b]

b)Identity-(a+b+c)²=a²+b²+c²+2ab +2bc +2ca

=9a²+16b²+25c²+24ab +40bc +30ac

I hope you understand the answer

Please mark this answer as brainliest cause it took time to type please