document.write( "Question 163137: Hi, this is the problem I was told to do:\r
\n" ); document.write( "\n" ); document.write( "[SQRT(2x + 2)] - [SQRT(x - 3)] = 2
\n" ); document.write( "or
\n" ); document.write( "√(2x+2) - √(x-3) = 2\r
\n" ); document.write( "\n" ); document.write( "I've been told to FOIL this problem, but I don't understand how to FOIL it if its subtracting and not multiplying. What I do know is that the answer is equal to 7.
\n" ); document.write( "Thanks in advance. \n" ); document.write( "

Algebra.Com's Answer #854440 by MathTherapy(10858) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "Hi, this is the problem I was told to do:\r\n" );
document.write( "\r\n" );
document.write( "[SQRT(2x + 2)] - [SQRT(x - 3)] = 2\r\n" );
document.write( "or\r\n" );
document.write( "√(2x+2) - √(x-3) = 2\r\n" );
document.write( "\r\n" );
document.write( "I've been told to FOIL this problem, but I don't understand how to FOIL it if its subtracting and not\r\n" );
document.write( "multiplying. What I do know is that the answer is equal to 7.\r\n" );
document.write( "Thanks in advance.\r\n" );
document.write( "*****************\r\n" );
document.write( "      \r\n" );
document.write( "This might be easier and less confusing if one of the radicals is moved to the right side. So, let's choose  to do that with. \r\n" );
document.write( "                     ----- Adding   to both sides\r\n" );
document.write( "                -- Squaring both sides\r\n" );
document.write( "                \r\n" );
document.write( "                         ---- FOILing right-side\r\n" );
document.write( "                        \r\n" );
document.write( "                        \r\n" );
document.write( "             \r\n" );
document.write( "                          \r\n" );
document.write( "                       ---- Squaring both sides\r\n" );
document.write( "                 \r\n" );
document.write( "                 \r\n" );
document.write( "\r\n" );
document.write( "            \r\n" );
document.write( "                     \r\n" );
document.write( "                          x - 7 = 0___x = 7\r\n" );
document.write( "\r\n" );
document.write( "             You can do the CHECK!!

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