How do you multiply 4r^3(2r^2-7r)?

1 Answer
akm06
May 15, 2018

You distribute the 4x^3 to the 2r^2 and the 7r. Answer: 8r^5- 28r^4.

Explanation:

More specifically, you multiply the 4 and the two together, for a total of 8, and then you add the powers of the two r terms. This would total 8r^5 for the first term. Next, multiply the 4 and the 7 together, for 28, and then add the powers. This would total 7r^4. Put the two terms together and the answer is 8r^5- 28r^4.

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