# Product

Algebra Level pending

What is the product of $$(3a^3-2b^3)$$ and $$(7a^3+5b^3)$$ ?

Choices:

a. $$21a^5 + 2a^3b^3 -10b^6$$

b. $$21a^6 +15a^3b^3 - 10b^5$$

c. $$21a^6 + a^3b^3 - 10b^6$$

d. $$21a^6 + a^3b^3 - 15b^6$$

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