Answer:
2y^2+18x
Step-by-step explanation:
4y^2 + 6x -2y^2 + 12x
=4y^2-2y^2+6x+12x
=2y^2+6x+12x
=2y^2+18x
Answer:
Relative maximum
Step-by-step explanation:
The median is 6. What you do is list all the numbers in order and cross one on each side out until your left with one.
Answer:
2u^5+5
Step-by-step explanation:
Drop parenthesis and add like terms.

Hope this helps!
If not, I am sorry.
Answer:
you should use P.E.D.A.S
Step-by-step explanation:
Parentheses,
Exponents,
Multiplication
Division (from left to right),
Addition
Subtraction (from left to right).