document.write( "Question 1197668: 17. The product of two numbers is 10. One number is 3 more than the other number.\r
\n" ); document.write( "\n" ); document.write( "a. What is the quadratic equation that models these numbers?\r
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\n" ); document.write( "\n" ); document.write( "b. Solve the quadratic equation from \"a\" to find the pairs of numbers
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Algebra.Com's Answer #831035 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "let two nubbers be \"x\" and \"y\"\r
\n" ); document.write( "\n" ); document.write( "if the product of two numbers is \"10\" we have
\n" ); document.write( " \"xy=10\".....eq1\r
\n" ); document.write( "\n" ); document.write( "if one number is \"3\" more than the other number we have
\n" ); document.write( " \"x=y%2B3\"........solve for \"y\"\r
\n" ); document.write( "\n" ); document.write( " \"y=x-3\".......eq.2\r
\n" ); document.write( "\n" ); document.write( "a. What is the quadratic equation that models these numbers?
\n" ); document.write( "\"xy=10\"....eq1, substitute \"y\" from eq.2
\n" ); document.write( "\"x%28x-3%29=10\"
\n" ); document.write( "\"x%5E2-3x=10\"
\n" ); document.write( "\"x%5E2-3x-10=0\"\r
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\n" ); document.write( "\n" ); document.write( "b. Solve the quadratic equation from \"a\" to find the pairs of numbers\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2-3x-10=0\"....factor
\n" ); document.write( "\"x%5E2%2B2x-5x-10=0\"
\n" ); document.write( "\"%28x%5E2%2B2x%29-%285x%2B10%29=0\"
\n" ); document.write( "\"x%28x%2B2%29-5%28x%2B2%29=0\"
\n" ); document.write( "\"%28x+-+5%29+%28x+%2B+2%29+=+0\"\r
\n" ); document.write( "\n" ); document.write( "solutions:\r
\n" ); document.write( "\n" ); document.write( "\"%28x+-+5%29=+0\"=>\"x=5\"
\n" ); document.write( "\"+%28x+%2B+2%29+=+0\"=>\"x=-2\"\r
\n" ); document.write( "\n" ); document.write( "go to\r
\n" ); document.write( "\n" ); document.write( " \"y=x-3\".......eq.2, substitute \"x\"
\n" ); document.write( " \"y=5-3\" =>\"y=2\"
\n" ); document.write( "\"y=-2-3\" =>\"y=-5\"\r
\n" ); document.write( "\n" ); document.write( "you have two pairs of numbers:
\n" ); document.write( "\"x=5\",\"y=2\"\r
\n" ); document.write( "\n" ); document.write( "or
\n" ); document.write( "\"x=-2\",\"y=-5\"\r
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