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12-12-2018
Mathematics

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what is -2 sqrt20 - sqrt125

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

12-12-2018

Answer:

-9sqrt(5)

Step-by-step explanation:

-2 sqrt20 - sqrt125

Lets simplify the square roots

sqrt(ab) = sqrt(a)sqrt(b)

-2 sqrt(4) sqrt(5) - sqrt(25) sqrt(5)

-2 *2sqrt(5) - 5sqrt(5)

-4sqrt(5) -5sqrt(5)

-9sqrt(5)

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