document.write( "Question 882510: Solve for all solutions for 2sinx^2+sinx-1=0 \n" ); document.write( "

Algebra.Com's Answer #532881 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"u=sin%28x%29\"$
\n" ); document.write( " $\"2u%5E2%2Bu-1=0\"$
\n" ); document.write( " $\"%28u%2B1%29%282u-1%29=0\"$
\n" ); document.write( "Two solutions:
\n" ); document.write( " $\"u%2B1=0\"$
\n" ); document.write( " $\"u=-1\"$
\n" ); document.write( " $\"sin%28x%29=-1\"$
\n" ); document.write( " $\"x=%283%2F2%29pi\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( " $\"2u-1=0\"$
\n" ); document.write( " $\"2u=1\"$
\n" ); document.write( " $\"u=1%2F2\"$
\n" ); document.write( " $\"sin%28x%29=1%2F2\"$
\n" ); document.write( " $\"x=pi%2F6\"$ and $\"x=%285%2F6%29pi\"$
\n" ); document.write( " \n" ); document.write( "

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