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What is negative 10 plus or minus the square root of 212 all over 8 in fraction form?

 Oct 22, 2014

Best Answer 

 #1
avatar+23245 
+5

( -10 ± √212 ) / 8

=  (-10 ± √4√53 ) / 8

=  (-10 ± 2√53 ) / 8

Now, this fraction can be reduced by cancelling only if you cancel out of the -10, the 2, and the 8; you can cancel 2 out of each: (when you cancel 2 out of 2, it becomes 1, but you need not write it in this case)

=  (-5 ± √53 ) / 4

Remember: when cancelling, you MUST cancel the same number out of ALL THREE!

 Oct 23, 2014
 #1
avatar+23245 
+5
Best Answer

( -10 ± √212 ) / 8

=  (-10 ± √4√53 ) / 8

=  (-10 ± 2√53 ) / 8

Now, this fraction can be reduced by cancelling only if you cancel out of the -10, the 2, and the 8; you can cancel 2 out of each: (when you cancel 2 out of 2, it becomes 1, but you need not write it in this case)

=  (-5 ± √53 ) / 4

Remember: when cancelling, you MUST cancel the same number out of ALL THREE!

geno3141 Oct 23, 2014

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