document.write( "Question 132299: Someone please help.\r
\n" ); document.write( "\n" ); document.write( "y^2=5/7y+3/7 Does it have 2 non-real solutions, 2 real solutions, or 1 real solutions.\r
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Algebra.Com's Answer #96655 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\"y%5E2=%285%2F7%29y%2B3%2F7\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"0=%285%2F7%29y%2B3%2F7-y%5E2\" Subtract \"y%5E2\" from both sides\r
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\n" ); document.write( "\n" ); document.write( "\"0=-y%5E2%2B%285%2F7%29y%2B3%2F7\" Rearrange the terms\r
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\n" ); document.write( "\n" ); document.write( "\"7%2A0=7%28-y%5E2%2B%285%2F7%29y%2B3%2F7%29\" Multiply both sides by the LCD 7. This will eliminate the fractions\r
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\n" ); document.write( "\n" ); document.write( "\"0=-7y%5E2%2B5y%2B3\" Distribute and multiply\r
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\n" ); document.write( "\n" ); document.write( "From the quadratic formula\r
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\n" ); document.write( "\n" ); document.write( "\"y+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"\r
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\n" ); document.write( "\n" ); document.write( "the discriminant consists of all of the terms in the square root. So the discriminant is\r
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\n" ); document.write( "\n" ); document.write( "\"D=b%5E2-4ac\"\r
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\n" ); document.write( "\n" ); document.write( "the discriminant tells us how many solutions (and what type of solutions) we can expect for any quadratic.\r
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\n" ); document.write( "\n" ); document.write( "Now let's find the discriminant for \"y=-7y%5E2%2B5y%2B3\":\r
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\n" ); document.write( "\n" ); document.write( "\"D=b%5E2-4ac\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"D=%285%29%5E2-4%2A-7%2A3\" Plug in a=-7, b=5, c=3\r
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\n" ); document.write( "\n" ); document.write( "\"D=25-4%2A-7%2A3\" Square 5 to get 25\r
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\n" ); document.write( "\n" ); document.write( "\"D=25%2B84\" Multiply -4*-7*3 to get 84\r
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\n" ); document.write( "\n" ); document.write( "\"D=109\" Combine 25 and 84 to get 109\r
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\n" ); document.write( "\n" ); document.write( "Since the discriminant equals 109 (which is greater than zero) , this means there are two real solutions. Remember if the discriminant is greater than zero, then the quadratic will have two real solutions.\r
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