document.write( "Question 86408: Solve by using the quadratic formula...
\n" ); document.write( "1. 2x^2-7x=5\r
\n" ); document.write( "\n" ); document.write( "Solve...
\n" ); document.write( "1. x^2+10x+16=0\r
\n" ); document.write( "\n" ); document.write( "The demand and supply equations for a certain item are given by D=-5p+40/S=-p^2+30p-8..Find the equilibirum price...\r
\n" ); document.write( "\n" ); document.write( "Find the axis of symmetry...
\n" ); document.write( "1. y=x^2-7x+2\r
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Algebra.Com's Answer #62689 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Solve by using the quadratic formula...
\n" ); document.write( "1. 2x^2-7x=5
\n" ); document.write( "2x^2 - 7x - 5 = 0; a=2; b=-7; c=-5
\n" ); document.write( "\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"
\n" ); document.write( "\"x+=+%28-%28-7%29+%2B-+sqrt%28+-7%5E2+-+4+%2A+2+%2A+-5+%29%29%2F%282%2A2%29+\"
\n" ); document.write( "\"x+=+%28%2B7+%2B-+sqrt%28+49+-+%28-40+%29%29%29%2F%284%29+\"
\n" ); document.write( "\"x+=+%28%2B7+%2B-+sqrt%28+89%29%29%2F%284%29+\"
\n" ); document.write( "Solution 1
\n" ); document.write( "\"x+=+%287+%2B+9.43398%29%2F4\"
\n" ); document.write( "\"x+=+16.43398%2F4\"
\n" ); document.write( "x = +4.1085
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\n" ); document.write( "Solution 2
\n" ); document.write( "\"x+=+%287+-+9.43398%29%2F4\"
\n" ); document.write( "\"x+=+-2.43398%2F4\"
\n" ); document.write( "x = -.6085
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\n" ); document.write( "Solve...
\n" ); document.write( "1. x^2+10x+16=0
\n" ); document.write( "Easily factored:
\n" ); document.write( "(x+8)(x+2) = 0
\n" ); document.write( "x = -8
\n" ); document.write( "x = -2
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\n" ); document.write( ":
\n" ); document.write( "The demand and supply equations for a certain item are given by
\n" ); document.write( "D=-5p + 40 and S = -p^2 + 30p - 8.. Find the equilibrium price...
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\n" ); document.write( "Equilibrium price occurs when D = S; therefore:
\n" ); document.write( "-5p + 40 = -p^2 + 30p - 8
\n" ); document.write( ":
\n" ); document.write( "p^2 - 5p - 30p + 40 + 8 = 0; arrange an equation on the left:
\n" ); document.write( "p^2 - 35p + 48 = 0
\n" ); document.write( "Solve this using the quadratic formula: a=1; b=-35; c=48 like we did above
\n" ); document.write( "You will find two values. It's lower value we want. p = $1.43
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\n" ); document.write( "Find the axis of symmetry...
\n" ); document.write( "1. y=x^2-7x+2
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\n" ); document.write( "The axis of symmetry formula: x = -b/(2a)
\n" ); document.write( "In this equation; a = 1; b = -7
\n" ); document.write( "x = -(-7)/(2*1)
\n" ); document.write( "x = +7/2
\n" ); document.write( "x = +3.5 is the axis of symmetry \n" ); document.write( "
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