document.write( "Question 35189: zeros of a function:
\n" ); document.write( "find the zeros (i.e. x-intercepts) of the following functions:
\n" ); document.write( "1) f(x)=-48x^2+3x^4
\n" ); document.write( "2) f(x)=-4x^3-15x^2+18x \n" ); document.write( "

Algebra.Com's Answer #21389 by venugopalramana(3286) $\"\"$ $\"About$

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find the zeros (i.e. x-intercepts) of the following functions:
\n" ); document.write( "1) f(x)=-48x^2+3x^4
\n" ); document.write( "3X^2(X^2-16)=0
\n" ); document.write( "X^2=0...THAT IS X=0...OR
\n" ); document.write( "X^2-16=0...THAT IS X^2=16...THAT IS X=4 OR -4\r
\n" ); document.write( "\n" ); document.write( "2) f(x)=-4x^3-15x^2+18x
\n" ); document.write( "X(-4X^2-15X+18)=0\r
\n" ); document.write( "\n" ); document.write( "X=0...OR
\n" ); document.write( "4X^2+15X-18=0....USE QUADRATIC FORMULA`TO GET THE ROOTS\r
\n" ); document.write( "\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( " $\"x+=+%28-15%2B-+sqrt%28+%28-15%29%5E2-4%2A4%2A%28-18%29+%29%29%2F%282%2A4%29+\"$
\n" ); document.write( " $\"x+=+%28-15+%2B-+sqrt%28+225%2B288+%29%29%2F8+\"$
\n" ); document.write( " $\"x+=+%28-15+%2B-+sqrt%28+513+%29%29%2F8+\"$ \n" ); document.write( "

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