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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.

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.
asked 220k views
0 votes
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.

asked
User Zelinka
by
8.3k points

1 Answer

3 votes

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

answered
User Ethel Patrick
by
8.5k points
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