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zimovet [89]
2 years ago
7

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

Mathematics
2 answers:
tatuchka [14]2 years ago
8 0

Answer:

21x^{2}

Step-by-step 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

harkovskaia [24]2 years ago
6 0

Answer:

Step-by-step explanation:

(4x²+15x²)-(-2x²)=19x²+2x²=21x²

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