Question

simplify this using formula
(-1-2a)^2​

Answer 1

Answer:

(4a+1) (2a+1)

Step-by-step explanation:

(-1-2a)^2

it is in formula (a-b)^2, where a= -1, b= 2a;

a^2+b^2-2ab

1+4a^2+4a (-- = +)

4a^2+2a+2a+1 ( middle term break:- 2a+2a= 4a)

4a(2a+1)+1(2a+1)

(4a+1)(2a+1)

hope this helped u