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I have till 4: plss help

I have till 4: plss help-example-1
User Ella Gogo
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1 Answer

6 votes

Answer:


( \: 10 + 7r - {r}^(2) \: ) + ( - 6 {r}^(2) - 18 + 5r \: ) \\ \dashrightarrow \: 10 + 7r - {r}^(2) - 6 {r}^(2) - 18 + 5r \\ \dashrightarrow \: \boxed{\: - 7 {r}^(2) + 12r - 8}

hope helpful! :)

User Kendall
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