Question

Q22) EXPAND (2a+ 3b+ 4c)^2​

Answer 1

Answer:

here is ur answer:

( 2a + 3b + 4c)2

dear, we need a formula which is

(a+b+c)2 = a + b3 + c2 + 2 ( ab + bc + cb )

now,

(2a)2 + ( 3b )? + ( 4c )? + 2{( 2a.3b + 3b.4c + 4c. 2a ) }

= 4a? + 9b? + 16c? + 2((6ab + 12bc + 8ca )}