document.write( "Question 32279: Please help me solve this equation:\r
\n" ); document.write( "\n" ); document.write( " Multiply. (2x^2+4x-5)(x^2+3x+3)\r
\n" ); document.write( "\n" ); document.write( " Answers:
\n" ); document.write( " (A) 2x^4+6x^3+13x^2-3x-15
\n" ); document.write( " (B) 2x^4+10x^3+13x^2-3x-15
\n" ); document.write( " (C) 2x^4+10x^3+18x^2-3x-15
\n" ); document.write( " (D) 2x^4+6x^3+18x^2-3x-15\r
\n" ); document.write( "\n" ); document.write( "The only thing I could think of to solve is FOIL but I did not get any of the answers listed. Thanks
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Algebra.Com's Answer #18809 by mbarugel(146)\"\" \"About 
You can put this solution on YOUR website!
Hello!
\n" ); document.write( "As you mentioned, this problem can be solved using the FOIL method. However, since there are two trinomials, it cna become a bit cumbersome. So let's do it like this. First, let's split the expression by multiplying each term in the 1st trinomial by the whole 2nd trinomial:\r
\n" ); document.write( "\n" ); document.write( "\"2x%5E2%28x%5E2%2B3x%2B3%29+%2B+4x%28x%5E2%2B3x%2B3%29+-5%28x%5E2%2B3x%2B3%29\"\r
\n" ); document.write( "\n" ); document.write( "And then use the distributive property for each:\r
\n" ); document.write( "\n" ); document.write( "\r
\n" ); document.write( "\n" ); document.write( "And finally, group like terms:\r
\n" ); document.write( "\n" ); document.write( "\"2x%5E4+%2B+%286+%2B+4%29x%5E3+%2B+%286%2B12-5%29x%5E2+%2B+%2812+-+15%29x+-+15\"
\n" ); document.write( "\"2x%5E4+%2B+10x%5E3+%2B+13x%5E2+-+3x+-+15\"\r
\n" ); document.write( "\n" ); document.write( "So the correct answer is B\r
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\n" ); document.write( "\n" ); document.write( "I hope this helps!
\n" ); document.write( "Get more answers at Online Math Answers.com!
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