document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=903100>Question 903100</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Perform the indicated multiplication. Then simplify.    <BR>\n" );
document.write( "sqrt7 ( 6sqrt3 - 6 sqrt7)\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #547780 by </B><A HREF=/tutors/aboutme.mpl?userid=AlgebraLady88><B>AlgebraLady88(44)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=AlgebraLady88><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=AlgebraLady88><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=547780\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To solve, we use the distributive postulate. A postulate is a statement that is accepted as true.  A distributive postulate would be written like this :\r<BR>\n" );
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document.write( "a(b+c) = ab + ac \r<BR>\n" );
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document.write( "sqrt 7 ( 6sqrt3 - 6sqrt7)\r<BR>\n" );
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document.write( "= 6 sqrt 21 - 6 sqrt 49<BR>\n" );
document.write( "= 6 sqrt 21 - 6*7<BR>\n" );
document.write( "= 6 sqrt 21 - 42\r<BR>\n" );
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document.write( "Explanation : when we multiply radicals, we just multiply the radicands. A radicand is the number inside the radical sign. Therefore, sqrt of 7 multiplied by sqrt of 3 is sqrt of 21. We cannot simplify sqrt of 21 any further as the factors for 21 are simply 3 and 7. These are not square numbers. <BR>\n" );
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