3 years ago

I need help on the Math question?

Mathematics

1 answer:

mrs_skeptik [129]3 years ago

3 0

Answer:

The answer is D.

Step-by-step explanation:

3x*3x = 9x^2

3x*2= 6x

5*3x=15x

5*2=10

6x+15x=21x

9x^2+21x+10

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