document.write( "Question 4930: i do not know what to do to solve this example.. (root sign)9x(x to the second power) divided by (root sign) 18x(x to the second power)???\r
\n" ); document.write( "\n" ); document.write( "also there is this problem
\n" ); document.write( "2(rootsign)20 -3(rootsign)7 - 2(rootsign)5 + 4 (rootsign)63\r
\n" ); document.write( "\n" ); document.write( " ok i get 2(rootsign)5 - 3(rootsign)7 - 2(rootsign)5 + 3(rootsign)7 now does this become 2(rootsign)5 + 9(rootsign)7??? \n" ); document.write( "
Algebra.Com's Answer #2435 by lotanez(23)\"\" \"About 
You can put this solution on YOUR website!
rewrite your problem:
\n" ); document.write( "√9x^2/√18x^2=(√9)(√x^2)/(√18)(√x^2)
\n" ); document.write( " =3x/3x√2
\n" ); document.write( " =3x(√2)/3x√2
\n" ); document.write( " =√2\r
\n" ); document.write( "\n" ); document.write( "√9=3
\n" ); document.write( "√x^2=x
\n" ); document.write( "√18=√9x2=3√2 (not a perfect square, so factor out the 18)
\n" ); document.write( "multiply both sides by √2 and the 3x cancel out.\r
\n" ); document.write( "\n" ); document.write( "2√20 - 3√7 - 2√5 + 4√63
\n" ); document.write( "= 2(√4)(√5) - 3√7 -2√5 + 4(√9)(√7) *√4=2, √9=3
\n" ); document.write( "= (2)(2)√5 -3√7 - 2√5 + (4)(3)√7
\n" ); document.write( "= 4√5 - 3√7 - 2√5 + 12√7
\n" ); document.write( "(you can only add the same radicals together)
\n" ); document.write( "= 4√5 - 2√5 - 3√7 + 12√7
\n" ); document.write( "= 2√5 + 9√7
\n" ); document.write( "Yes! You were right. \r
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