document.write( "Question 755387: solve the following system of equations algebraically
\n" ); document.write( "a. y=2x^2+20x+15 and y=7x
\n" ); document.write( "b. 16=x^2-y-4x and 2y=6x+4
\n" ); document.write( "c. y=5x^2+8x-2 and y=2x-3
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Algebra.Com's Answer #459651 by Alan3354(69443)\"\" \"About 
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solve the following system of equations algebraically
\n" ); document.write( "a. y=2x^2+20x+15 and y=7x
\n" ); document.write( "Sub for y
\n" ); document.write( "7x = 2x^2+20x+15
\n" ); document.write( "It's just a quadratic. solve for x
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\n" ); document.write( "b. 16=x^2-y-4x
\n" ); document.write( "2y=6x+4 --> y = 3x + 2
\n" ); document.write( "Sub for y as in a
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\n" ); document.write( "c. y=5x^2+8x-2 and y=2x-3
\n" ); document.write( "Same again
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