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Schach [20]
4 years ago
10

Subtract 12x^2+6y-3 and 3x^2-9y+12

Mathematics
2 answers:
sesenic [268]4 years ago
8 0

Answer:

15x² - 3y + 9

Step-by-step explanation:

(12x² + 6y - 3) + (3x² - 9y + 12)

12x² + 6y - 3 + 3x² - 9y + 12

12x² + 3x² + 6y - 9y + 12 - 3

15x² + 6y - 9y + 12 - 3

15x² - 3y + 12 - 3

15x² - 3y + 9

Molodets [167]4 years ago
3 0

Answer:

<u>The correct answer is 9x² +15y - 15</u>

Step-by-step explanation:

Let's subtract 12x^2+6y-3 and 3x^2-9y+12:

12x^2 +6y - 3

-

3x^2 -9y  + 12

_______________

<u>9x² +15y - 15</u>

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