Question

1. Expand
(i) (3m + 5)2​

Answer 1

Answer:

9m²+30m+25

Step-by-step explanation:

(3m+5)² is in the form of (a+b)²

here (a+b)²= a²+2ab+b²

therefore (3m+5)² = (3m)²+2(3m)(5)+5²

= 9m²+30m+25

Answer 2

Answer:

this is you question and please refer the attachment

Step-by-step explanation:

if don't understand I will be giving the written solution also

(3m+5)^2

By using (a+b)^2

(a^2 + b^2 + 2ab)

a = 3m

b= 5

Now we will be putting the values

(3m)^2 + (5^2) +2×3m×5

after doing this you will get

9m^2+ 25 + 30m

please note that this mean any number having raise to the power 2

^2. ←_←