document.write( "Question 93560: I am not sure about this problem\r
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\n" ); document.write( "\n" ); document.write( "Is the following trinomial a perfect square?
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Algebra.Com's Answer #68125 by Edwin McCravy(20055) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Is the following trinomial a perfect square?\r\n" );
document.write( "x^2+8x-16 \r\n" );
document.write( "Thank you\r\n" );
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document.write( "How to test a trinomial to see if it is a perfect square:\r\n" );
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document.write( "1. Find square roots of first and last terms.\r\n" );
document.write( "2. Multiply them together.\r\n" );
document.write( "3. Double what you have so far.\r\n" );
document.write( "4. Do you get the middle term or the middle term with the opposite sign?\r\n" );
document.write( "   If so the trinomial is a perfect square.\r\n" );
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document.write( "Oh,oh, last term is negative and I can't get the square root of it.\r\n" );
document.write( "So no, it's not a perfect square.\r\n" );
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document.write( "If it had been  or  it would have been,\r\n" );
document.write( "but if the last sign is negative, it never can be a perfect square.\r\n" );
document.write( "The last term must be positive.\r\n" );
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document.write( "Edwin

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