document.write( "Question 258484: how would you solve (9x-3) (x^2+2x+1) in the horizontal method? \n" ); document.write( "

Algebra.Com's Answer #190298 by drk(1908) $\"\"$ $\"About$

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Here is the question:
\n" ); document.write( "(i) $\"%289x-3%29+%28x%5E2%2B2x%2B1%29+\"$
\n" ); document.write( "step 1 use distributive property by sending the 9x through all parts of the second parenthesis and get
\n" ); document.write( "(ii) 9x(x^2) + 9x(2x) + 9x(1)
\n" ); document.write( "this becomes
\n" ); document.write( "(iii) 9x^3 + 18x^2 + 9x
\n" ); document.write( "step 2 - send the -3 through using distributive property and get
\n" ); document.write( "(iv) (-3)(x^2) + (-3)(2x) + (-3)(1)
\n" ); document.write( "this becomes
\n" ); document.write( "(v) -3x^2 - 6x - 3
\n" ); document.write( "putting (iii) and (v) together, we get
\n" ); document.write( "(vi) 9x^3 + 18x^2 + 9x -3x^2 - 6x - 3
\n" ); document.write( "combine like terms to get
\n" ); document.write( "9x^3 +15x^2 + 3x - 3 \n" ); document.write( "

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