- Choice J$$3x^{5}\cdot7x^{9}=(3\cdot7)(x^{5}\cdot x^{9})$$ $$=21x^{14}$$
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- Choice J$$3x^{5}\cdot7x^{9}=(3\cdot7)(x^{5}\cdot x^{9})$$ $$=21x^{14}$$
## Skills you are tested for:

Was this explanation helpful?

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