document.write( "Question 174368: please give me the answers to these..THANKS! (' means exponet after..)\r
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\n" ); document.write( "\n" ); document.write( "Use Pascal's Triangle to expand each binomial.\r
\n" ); document.write( "\n" ); document.write( "1. (x – y5)'3\r
\n" ); document.write( "\n" ); document.write( "2. (2a + b)'5 \r
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\n" ); document.write( "\n" ); document.write( "3. Use the Binomial Theorem to expand (3x - 2y)4. \r
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\n" ); document.write( "\n" ); document.write( "4. What is the coefficient of a4b6 in the expansion of (a + b)10?
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Algebra.Com's Answer #129321 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Use Pascal's Triangle to expand each binomial.
\n" ); document.write( "1. (x – y5)'3
\n" ); document.write( "(x - y^5)^3
\n" ); document.write( "4th row of Pascal's Triangle: 1...3...3....1
\n" ); document.write( "Expansion: 1x^3 + 3x^2(-y^5) + 3x(-y^5)2 + 1(-y^5)^3
\n" ); document.write( "= x^3 -3x^2y^5 + 3xy^10 - y^15
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\n" ); document.write( "2. (2a + b)^5
\n" ); document.write( "6th row of Pascal: 1....6....15...20....15....6....1
\n" ); document.write( "Expansion: 1(2a)^5 + 6(2a)^4b + 15(2a)^3b^2 + 20(2a)^2b^3 + 6(2a)b^4 + 1b^5
\n" ); document.write( "= 32a^5 + 96a^4b + 120a^3b^2 + 80a^2b^3 + 12ab^4 + b^5
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\n" ); document.write( "\n" ); document.write( "3. Use the Binomial Theorem to expand (3x - 2y)^4.
\n" ); document.write( "= (3x)^4 + 4(3x)^3*4 + 6(3x)^2*4^2 + 4(3x)*4^3 + 4^4\r
\n" ); document.write( "\n" ); document.write( "= 81x^4 + 108x^3 + 864x^2 + 768x + 256
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\n" ); document.write( "\n" ); document.write( "4. What is the coefficient of a4b6 in the expansion of (a + b)10?
\n" ); document.write( "Since 4+6 = 10 and a is to the 4 the 4th power the coefficient is 10C4 = 210
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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