document.write( "Question 125943: factoring: quadratic equations and completing the square
\n" ); document.write( "2a^2-5ab-3b^2=0\r
\n" ); document.write( "\n" ); document.write( "would i use complete the square to factor this? I'm not sure. Is there more than one way to do it?
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Algebra.Com's Answer #92302 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
2a^2-5ab-3b^2=0
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\n" ); document.write( "Use the AC Method
\n" ); document.write( "Your Problem:
\n" ); document.write( "AC = 2*-3 = -6
\n" ); document.write( "B = -5
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\n" ); document.write( "Think of two numbers whose product = AC = -6
\n" ); document.write( "and whose sum is B = -5
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\n" ); document.write( "The numbers are -6 and +1
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\n" ); document.write( "Replace the B-term with the sum: -5ab = -6ab+ab to get:
\n" ); document.write( "2a^2-6ab+ab-3b^2 = 0
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\n" ); document.write( "Factor the 1st two terms and the last two terms separately to get:
\n" ); document.write( "2a(a-3b)+b(a-3b) = 0
\n" ); document.write( "Factor again to get:
\n" ); document.write( "(a-3b)(2a+b) = 0
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\n" ); document.write( "At this point you have factored the left side of the original equation.
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\n" ); document.write( "Therefore:
\n" ); document.write( "a = 3b or a = -b/2
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\n" ); document.write( "cheers,
\n" ); document.write( "stan H.
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