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Seybsen · Answer 1 · 2017-03-07T12:29:16+0000

it is rational and equal to 0. square root of 28 simplifies to 2 root 7, because you can take out the 4 and leave the 7 under the radical. because sq rt of 28 is 2 root 7, it's the same as the first term so it equals 0

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