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what the answer im having trouble finding the answer in simplest form

Algebra
Tutor: None Selected Time limit: 1 Day

{(-1)-(7-2(-1)}1/2

Jul 24th, 2014

{(-1)-(7-2(-1)}1/2

In this type of expression , we first solve circle brackets first, So

{(-1)-(7+2)}1/2

{-1-(9)}1/2

{-1-9}1/2

{-10}1/2

Now multiplying 1/2 in the bracket, we get

{-10/2}           or

-10/2

-5

HENCE   {(-1)-(7-2(-1)}1/2 = -5

Jul 24th, 2014

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