document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=535289>Question 535289</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is -4 square root 27 + square root 12 </SPAN>\n" );
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document.write( "-4sqrt(27) + sqrt(12) <P><BR>\n" );
document.write( "Remember sqrt(xy)=sqrt(x)*sqrt(y).  Break up (factor) 27 and 12 into perfect square factors, so you can bring them out of the sqrt().<P>\r<BR>\n" );
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document.write( "-4 sqrt(3)*sqrt(9) + sqrt(3)*sqrt(4) = <P>\r<BR>\n" );
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document.write( "sqrt(9)=3 and sqrt(4)=2 so:<P><BR>\n" );
document.write( "-4*3*sqrt(3) +2*sqrt(3) = -12sqrt(3) + 2sqrt(3) = -10sqrt(3) = approx. -17.32 </SPAN>\n" );
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