How do you add #sqrt75 +sqrt48 -sqrt243#?

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How do you add #sqrt75 +sqrt48 -sqrt243#?

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Answer 1 · 2018-03-09T07:25:14

You can rewrite these roots as a number multiplied by the root of tree.

Explanation:

#sqrt(75)# + #sqrt(48)# - #sqrt(243)# =
#sqrt(3*25)# + #sqrt(3 * 16)# - #sqrt(3 * 81)# =
5#sqrt(3)# + 4#sqrt(3)# - 9*#sqrt(3)# = (5 + 4 - 9) * #sqrt(3)# = 0 * #sqrt(3)# = 0

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How do you add #sqrt75 +sqrt48 -sqrt243#?

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