document.write( "Question 1023089: I need to find the answer to the sqrt of -8 ( sqrt -3 - sqrt 5) ugh. I got i sqrt 8 (i sqrt 3- sqrt 5) . Then I tried to simplify and did 4i sqrt 2 (i sqrt 3 - sqrt 5). Then I multiplied it and got 4i^2 sqrt 6 - 4i sqrt 10. Then I subbed i^2 for -1 & ended up with -4 sqrt 6 - 4i sqrt 10. My book says I'm suppose to get -2 sqrt 6 - 2i sqrt 10. Please help
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Algebra.Com's Answer #638607 by addingup(3677)![]() ![]() You can put this solution on YOUR website! the number i is defined to be equal to the square root of -1. \n" ); document.write( "This means that i^2 is equal to -1. \n" ); document.write( "You say you want to find the square root of -8. \n" ); document.write( "sqr(-8) = sqr(-1)*sqr(8) (property of square roots) \n" ); document.write( "sqr(-8) = i2.83 \n" ); document.write( " |