Question

Find the missing term
The sum of -3x^2 or 3x^2 and 7x^2 is 10x^2

Answer 1

3x²

Explanation:

Note that when adding, as long as the variables have the same power, you can combine the numbers together.

The sum of 3x² + 7x² = 10x² is correct.

If you used -3x², then it will be wrong, because -3x² + 7x² = 4x².

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