9/21 – Adding and Subtracting Polynomials

The focus of today’s lesson was on combining like terms.

Essentially, combining like terms is a fancy form of counting. For example, if you have 3 sheep and you also have 5 sheep, you have 8 sheep in total. Likewise, if you have 3 x^2‘s (“x squared’s”) and you also have 5 x^2‘s, you have 8 x^2‘s in total.

When you add or subtract like terms, the exponents stay the same and you simply add or subtract the coefficients.