Question #557a2

1 Answer
Sep 30, 2016

Answer:

#=7a^2d+2y +y^2#

Explanation:

Count the number of terms first.
Look for like terms. Only terms that have exactly the same variables can be added.

#10a^2d+2y -3da^2 +y^2" "larr# has 4 terms

#=color(red)(10a^2d -3a^2d)+2y +y^2" "larr# variables in alphabetical order.

#=color(red)(7a^2d)+2y +y^2" "larr# like terms added