Combining like terms

Combining like terms

The basics

-x+3x²

number of terms: 2

Variable: x

Coefficients: -1, 3

Rules:

*Always evaluate parenthesis

*Combine terms that have the same variable and degree

8x + 3x

11x

2y²+7y²-y²+2

8y²+2

8-2(x+4)

8-2x-8

-2x

As a function...

It takes you 45 minutes to get to school. You spend t minutes riding the bus at an average speed of 0.4 miles per minute. The rest of the time is spent walking at o.o6 miles per minute.

Algebraic function

d=o.4t+0.06(45-t)

Poll

My feelings about combining like terms are...

• I am awesome!

• Pretty good!

• Umm, maybe ok.

• No way am I ready!