Question

simplify the following below
:(4a+5b)^2​

Answer 1

Answer:

16a^2 +25b^2 +40ab

Step-by-step explanation:

we know that (a+b)^2 =a^2+b^2 +2ab

here, a=4a

and b=5b

hence, (4a+5b)^2 =(4a)^2 +(5b)^2 +2*4a*5b

=16a^2 +25b^2 +40ab