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express the sum radical -25+ 2radical-9 as a monomial in term of i

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Daniela88id
sqrt(-25)+2*sqrt(-9)= 5sqrt(-1)+2*3*sqrt(-1)= 5i+6i=11i

recall that i*i = -1 
:) 
Lexichipsid

answer is -1 if i am right im not so sure tho

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