solutions art B: Nicholas knows that (2 + 11) (1 - 1) is in factored for and that he can use it to determine the​

Step by step expontion

Its a right angled triangle not a right triangle

This law is sometimes called the grouping property. as you can see, regardless of how the numbers are grouped, the answer is still 13. the associative law of multiplication is similar to the same law for addition. it says that no matter how you group numbers you are multiplying together, you will get the same answer.