document.write( "Question 793969: Four times a number is twelve less than its square. find all such numbers \n" ); document.write( "

Algebra.Com's Answer #480515 by sunny1992(35) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+4X=%28X%5E2%29-12+\"$
\n" ); document.write( " $\"+X%5E2+-+4x+-+12+=+0+\"$
\n" ); document.write( "now by using quadratic formula or through factorization method or perfect square method solve for X.
\n" ); document.write( "here am using quadratic formula
\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( " $\"x+=+%28-%28-4%29+%2B-+sqrt%28+%28-4%29%5E2-4%2A%281%29%2A%28-12%29+%29%29%2F%282%2A1%29+\"$
\n" ); document.write( " $\"x+=+%28-%28-4%29+%2B-+sqrt%28+64+%29%29%2F%282%29+\"$
\n" ); document.write( " $\"x1+=+%28-%28-4%29+-+sqrt%28+64+%29%29%2F%282%29+=+%284-8%29%2F2+=+-2+\"$
\n" ); document.write( " $\"x2=+%28-%28-4%29+%2B+sqrt%28+64+%29%29%2F%282%29+=+%284%2B8%29%2F2+=6+\"$ \n" ); document.write( "

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