more math because i'm an idiotic neanderthal ^3 (radical) 125 - 4 (radical) 4?

👨🏻‍🏫 學術台數學

[匿名]

2017-09-27 11:53 am

i'm saying radical in parentheses because my phone keyboard doesn't have an actual radical sign please don't get all pissy thanks

回答 (5)

wanszeto

2017-09-27 11:56 am

∛125 - √4
= ∛(5³) - √(2²)
= 5 - 2
= 3

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Como

2017-09-27 5:03 pm

I am reading this as :-
125^(1/3) - 4 x 4^(1/2)
5 - 8 = - 3

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ted s

2017-09-27 12:23 pm

so you type ' cube root of 125 minus 4 times square root of 4 ... 5 - 8 = - 3

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[匿名]

2017-09-27 12:01 pm

With or without the radical sign, that expression is a wreck. Here is my best guess at the intended meaning.

³√(125) - 4√(4)
= 5 - 4(2)
= 5 - 8
= -3

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[匿名]

2017-09-27 11:58 am

125^1/3 - 4*4^(1/2)
= (25^3)^(1/3) - 4*(2^2)^1/2
= 25 - 4*2
= 25 - 8 = 17

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