document.write( "Question 180847: Ok, I have been working on these two since 4 30 this morning and still can't figure them out. Could somebody help me before I go nuts?
\n" ); document.write( "One is (z-6)^2-40=0 and 2x^2+7x+2=0 I keep getting some odd ball numbers and have not a clue what to do with them. Thanks in advance, Judy \n" ); document.write( "

Algebra.Com's Answer #135588 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"%28z-6%29%5E2-40=0\"$
\n" ); document.write( " $\"%28z-6%29%5E2=40\"$
\n" ); document.write( " $\"z-6+=+0+%2B-+sqrt%2840%29+\"$
\n" ); document.write( " $\"z=6+%2B-+2%2Asqrt%2810%29\"$
\n" ); document.write( "Approximately z=12.32, -0.32.
\n" ); document.write( " $\"+graph%28+300%2C+300%2C+-4%2C+16%2C+-20%2C+20%2C+%28x-6%29%5E2-40%29+\"$
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\n" ); document.write( " $\"2x%5E2%2B7x%2B2=0\"$
\n" ); document.write( "Use the 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( " $\"x+=+%28-7+%2B-+sqrt%28+7%5E2-4%2A2%2A2+%29%29%2F%282%2A2%29+\"$
\n" ); document.write( " $\"x+=+%28-7+%2B-+sqrt%28+49-16+%29%29%2F%284%29+\"$
\n" ); document.write( " $\"x+=+%28-7+%2B-+sqrt%28+33+%29%29%2F%284%29+\"$
\n" ); document.write( "Approximately, x=-3.18,-0.31
\n" ); document.write( " $\"+graph%28+300%2C+300%2C+-7%2C+3%2C+-5%2C+5%2C+2%2Ax%5E2%2B7%2Ax%2B2%29+\"$
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\n" ); document.write( "Are those the oddball numbers you were getting?? \n" ); document.write( "

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