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Pearson Algebra 1 Common Core, 2011
PA
Pearson Algebra 1 Common Core, 2011 View details
Chapter Review
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Exercise 84 Page 71

Remember, only like terms can be combined.

-2ab^2

Practice makes perfect

The first step in simplifying this expression is to identify which, if any, terms can be combined. Remember, only like terms — constant terms or terms with the same variable — can be combined. - ab^2-ab^2 The terms are both ab^2-terms, so we can subtract them. - ab^2- ab^2=-2ab^2

Alternative Solution

 Factor out ab^2
We can also show this by factoring out ab^2, using the Distributive Property in reverse, and then subtract the coefficients.

- ab^2-ab^2
SplitIntoFactors

Split into factors

(-1)* ab^2-1* ab^2
FactorOut

Factor out ab^2

(-1-1 )ab^2
SubTerm

Subtract term

(- 2)ab^2
Multiply

Multiply

-2 ab^2
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