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5 votes
Subtract -2x² from the sum of 4x² and 15x².​

User Cyperpunk
by
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2 Answers

4 votes

Answer:


21x^(2)

Explanation:


4x^(2) +15x^(2) --2x^(2)


4x^(2) +15x^(2) +2x^(2)...........2 negatives signs next to each make a positive


21x^(2).................................combine like terms

User Nick Price
by
8.0k points
3 votes

Answer:

Explanation:

(4x²+15x²)-(-2x²)=19x²+2x²=21x²

User Leonardo Bezerra
by
7.5k points