First, familiarize yourself with the math formula, use memorization techniques (ex.flashcards), understand the formulas, and get plenty of sleep.
Answer:
15xy+3y
Step-by-step explanation:
first 3(5y+1)y the answer is 15xy+3y
Answer:
The last one is the answer.
Answer:
Line DC.
Step-by-step explanation:
Point D and Point C are not connected and, therefore, do not form a line.