First you simply have to substitute 2 in replace of all the a's, and -2 in replace of all of the b's
4((2)2+2(-2))
Then you want to follow the order of operations, PEMDAS (Parantheses-Exponent-Multiplication-Division-Addition-Subtraction), and multiply within the parantheses.
4(4+(-4))
Next you will add within the parantheses (So add the 4 and -4 together)
4(0)
Lastly multiply
0
Your answer is 0
Hope this helps!
I'm not completely sure but if you think your friend is 15 miles from it and you are four miles from your friend and you are actually closer to the store you would 15-4=11 then add 2 more miles because that is the distance from the grocery store so you should get 13 miles from home.
Answer: I believe the answer to your question is Yes by SAS. I believe my coucelations are right but if not I'm sorry. I tryed:)
Step-by-step explanation:
Answer:
30x18 =540. Does that help?