document.write( "Question 298458: z^2 + 12z + 15 = 0
\n" ); document.write( "I tried in the Quadractic having trouble solving it. \n" ); document.write( "

Algebra.Com's Answer #214696 by checkley77(12844) $\"\"$ $\"About$

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z^2 + 12z + 15 = 0
\n" ); document.write( " $\"z+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( "z=(-12+-sqrt[12^2-4*1*15])/2
\n" ); document.write( "z=(-12+-sqrt144-60])/2
\n" ); document.write( "z=(-12+-sqrt84)/2
\n" ); document.write( "z=(-12+-9.165)/2
\n" ); document.write( "z=(-12+9.165)/2
\n" ); document.write( "z=-2.835/2
\n" ); document.write( "z=-1.4175 ans.
\n" ); document.write( "z=(-12-9.165)/2
\n" ); document.write( "z=(-21.165)/2
\n" ); document.write( "z=-10.5825 ans.
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