document.write( "Question 711674: HI i need help with these questions.(Completing the square.)\r
\n" ); document.write( "\n" ); document.write( "1.)75x^2+35x-10=0
\n" ); document.write( "2.)4x^2-72x+324=0 \n" ); document.write( "
Algebra.Com's Answer #437538 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Completing the square.)
\n" ); document.write( "1.)75x^2+35x-10=0
\n" ); document.write( "25x^2 + 7x - 5 = 0
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\n" ); document.write( "25x^2 + 7x = 5
\n" ); document.write( "25(x^2 + (7/25)x + ?) = 5 + 25*?
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\n" ); document.write( "Complete the square:
\n" ); document.write( "25(x^2 + 7/25 x + (7/50)^2) = 5 + 25(7/50)^2
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\n" ); document.write( "25(x+(7/50))^2 = 5 + 25(49/2500)
\n" ); document.write( "---
\n" ); document.write( "25(x+(7/50))^2 = 5 + (49/100)
\n" ); document.write( "25(x+(7/50))^2 = (5*49/100)
\n" ); document.write( "---
\n" ); document.write( "(x+(7/50))^2 = (49/500)
\n" ); document.write( "------
\n" ); document.write( "x+(7/50) = 7/(10sqrt(5))
\n" ); document.write( "etc.
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\n" ); document.write( "\n" ); document.write( "2.)4x^2-72x+324=0
\n" ); document.write( "4x^2 -72x = -324
\n" ); document.write( "----
\n" ); document.write( "4(x^2-18x + ?) = -324 + 4*?
\n" ); document.write( "Complete the square:
\n" ); document.write( "4(x^2-18x+81) = -324 + 4*81
\n" ); document.write( "----
\n" ); document.write( "4(x-9)^2 = 0
\n" ); document.write( "------
\n" ); document.write( "x = 9 with multiplicity 2.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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