2 years ago

Which statement is true about the difference 2 square root of 7 − square root of 28? It is rational and equal to −2. It is ratio

nal and equal to 0. It is irrational and equal to −2square root of 7. It is irrational and equal tosquare root of 7.

1 answer:

4 0

$2\sqrt{7} - \sqrt{28} = 2 \sqrt{7} - \sqrt{4 \times 7 } =2 \sqrt{7} - 2 \sqrt{7 } = 0$

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