If the equation is (3x) * (7x-9) would the answer be 21x-9?
回答 (2)
2015-02-23 11:42 pm
Thank you i get it now!
2015-02-23 11:40 pm
No. If you are multiplying a number by a multi-term number (polynomial), you have to multiply that single number by every term in the polynomial:
a(x + y) = ax + ay
So your:
3x(7x - 9)
You multiply the 3x by the 7x and -9 to get:
21x² - 27x
a(x + y) = ax + ay
So your:
3x(7x - 9)
You multiply the 3x by the 7x and -9 to get:
21x² - 27x
收錄日期: 2021-04-21 01:24:11
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