document.write( "Question 1050234: Given the function y=6x-20/x find the value of f^-1(19)? \n" ); document.write( "

Algebra.Com's Answer #665828 by Tatiana_Stebko(1539) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"6x-20%2Fx=19\"$
\n" ); document.write( " $\"%286x%5E2-20-19x%29%2Fx=0\"$
\n" ); document.write( " $\"6x%5E2-19x-20=0\"$
\n" ); document.write( " $\"x=%2819%2B-sqrt%28%28-19%29%5E2-4%2A6%2A%28-20%29%29%29%2F%282%2A6%29\"$
\n" ); document.write( " $\"x%5B1%5D=%2819-sqrt%28841%29%29%2F12=%2819-29%29%2F12=-5%2F6\"$
\n" ); document.write( " $\"x%5B2%5D=%2819%2Bsqrt%28841%29%29%2F12=%2819%2B29%29%2F12=4\"$
\n" ); document.write( "Answer: f^-1(19)= $\"-5%2F6\"$ , f^-1(19)=4\r
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