document.write( "Question 603440: I don't understand why 2x^2=15-7x has the answer x=-5, 1.5 \n" ); document.write( "

Algebra.Com's Answer #380688 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi,
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document.write( "I don't understand why 2x^2=15-7x has the answer x=-5, 1.5
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document.write( "generally a quadratic EQ will have two roots
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document.write( "2x^2=15-7x 
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document.write( "2x^2 +7x - 15=0
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document.write( "factoring
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document.write( "(2x -3)(x + 5) = 0
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document.write( "(2x -3) = 0   x = 3/2 0r 1.5
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document.write( "(x + 5) = 0   x = -5
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