briarkaltvedt
10.01.2020 •
Mathematics
Simplify 5√7+√7−2√7
a.4√7
b.3√21
c.3√7
d.4√21
i really am stuck on this problem.
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Ответ:
5√7+√7−2√7
Going from left to right:
5√7+√7 = 6√7
6√7 - 2√7 = 4√7
The answer is A. 4√7
Ответ: