# Math

Simplify this expression.
y+2y+3z
A. 2y+3z
B. 3y+3z
C. 2y^2+3z
D. 6yz

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1. No.

y + 2y = ?

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posted by PsyDAG
2. So the answer is C? Because there is 2 y's.

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posted by Gwen
3. Why did you square 2y?

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4. Because there are 2 y's...

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posted by Gwen
5. two y's = 2y

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6. Do you mean ^2

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posted by Gwen
7. No.

Let's say that y = 3

2y = 2 * 3 = 6

We don't square anything

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8. D?

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posted by Gwen
9. maybe B because 2y+y=3y+3z right?

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posted by Gwen
10. Which is it? B or D?

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