Question

please answer me friends it urgent ​

Answer 1

Answer:

11. a2 +b2+2ab

12. a2-b2

13.When you toss a coin there are two possible outcomes: 'heads' or 'tails'. Each of these outcomes is equally likely, since there is 1 'head' and 1 'tail' on the coin. If a coin is tossed twice, what is the probability of 'heads' coming up both times? A tree diagram is one way of showing all the possible outcomes.

Answer 2

Step-by-step explanation:

a2+b2+2ab

I have given the answer for 1 at