How do you combine like terms in #(3y ^ { 2} - 4y + 1) + ( - y ^ { 2} + y - 2)#?

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Answer 1 · 2016-11-17T09:02:57

#2y^2 - 3y - 1#

Step 1) Eliminate the terms in parenthesis:

#3y^2 - 4y + 1 - y^2 + y - 2#

Step 2) Group like terms:

#3y^2 - y^2 - 4y + y + 1 - 2#

Step 3) Combine the terms:

#(3 - 1)y^2 - (4 - 1)y - 1 =>#

#2y^2 - 3y - 1#