headahhboy headahhboy

19-09-2019
Mathematics

contestada

Find the difference: square root of 20 - square root of 80

Respuesta :

Lucianorayos1 Lucianorayos1

19-09-2019

Answer:

[tex]-2\sqrt{5}[/tex]

Step-by-step explanation:

[tex]\sqrt{20} = \sqrt{10*2} = \sqrt{5 * 2 *2} = \sqrt{2^2 * 5} = 2\sqrt{5} \\\\\sqrt{80} = \sqrt{20*4} = \sqrt{5*4 *4} = \sqrt{4^2 * 5} = 4\sqrt{5} \\\\2\sqrt{5} - 4\sqrt{5} = -2\sqrt{5}[/tex]

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lusungmike lusungmike

19-07-2020

Answer:

b

Step-by-step explanation:

Answer Link

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