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

User Brahim LAMJAGUAR
by
3.2k points

2 Answers

8 votes
8 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 Colin Wiseman
by
2.8k points
5 votes
5 votes

Answer:

Explanation:

(4x²+15x²)-(-2x²)=19x²+2x²=21x²

User Kirill Trofimov
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2.7k points