document.write( "Question 748452: What are the x's of: (2(cos^2)x)+(3(cos x))=0 \n" ); document.write( "

Algebra.Com's Answer #455492 by lwsshak3(11628) $\"\"$ $\"About$

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What are the x's of: (2(cos^2)x)+(3(cos x))=0
\n" ); document.write( " $\"2cos%5E2%28x%29%2B3cos%28x%29=0\"$
\n" ); document.write( "divide by cos(x)
\n" ); document.write( " $\"2cos%28x%29%2B3=0\"$
\n" ); document.write( "2cos(x)=-3
\n" ); document.write( "cos(x)=-3/2
\n" ); document.write( "no solution: (-1 ≤ cosx ≤ 1)
\n" ); document.write( " \n" ); document.write( "

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