document.write( "Question 1028187: 1) If p=2i-3j, q=3i+5j and r=i+j find 2p+q-3r.\r
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Algebra.Com's Answer #643332 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
1) If p=2i-3j, q=3i+5j and r=i+j find 2p+q-3r.
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document.write( "Since p=2i-3j, q=3i+5j and r=i+j,\r\n" );
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document.write( "replace p by (2i-3j), q by (3i+5j), r by (i+j)\r\n" );
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document.write( "in  2p+q-3r, and get\r\n" );
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document.write( "2(2i-3j)+(3i+5j)-3(i+j)\r\n" );
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document.write( "Now use the distributive principle to remove\r\n" );
document.write( "the parentheses:\r\n" );
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document.write( "4i-6j+3i+5j-3i-3j\r\n" );
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document.write( "Now collect like terms:\r\n" );
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document.write( "4i-4j\r\n" );
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\n" ); document.write( "2) The position vectors of the points P,Q,R and S relative
\n" ); document.write( "to the origin O are: P=Si-6j, Q=4i+4j, R=8i-9j, S=10i-25j
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\n" ); document.write( "I) 5p-3q+4r
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document.write( "Are you mixing capital letters with small letters and \r\n" );
document.write( "using them to stand for the same things?\r\n" );
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document.write( "Do you mean 5P-3Q+4R and not 5p-3q+4r?  What do you mean by \r\n" );
document.write( "the S in P=Si-6j?  Is that the same S as in S=10i-25j?\r\n" );
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document.write( "Edwin
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