document.write( "Question 1209342: What is the coefficient of x^2 in (x^3 + x^2 + x + 1)(5x^7 - 3x^4 + 10x^2 - 15)? \n" ); document.write( "
Algebra.Com's Answer #848568 by mccravyedwin(407)\"\" \"About 
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document.write( "(x3 + x2 + x + 1)(5x7 - 3x4 + 10x2 - 15)\r\n" );
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document.write( "We'll get a term in x2 when we \r\n" );
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document.write( "A. multiply the term x2 in the expression on the left by the term\r\n" );
document.write( "-15 in the expression on the right, getting -15x2.\r\n" );
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document.write( "and when we\r\n" );
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document.write( "B. multiply the term 1 in the expression on the left by the 10x2 in\r\n" );
document.write( "the expression on the right, getting 10x2\r\n" );
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document.write( "That's -15x2 + 10x2 = -5x2, \r\n" );
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document.write( "And the coefficient is --- \r\n" );
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document.write( "     tada! ---\r\n" );
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document.write( "           -5\r\n" );
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document.write( "Edwin
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