document.write( "Question 135417: Expanding Brackets when cubed eg
\n" ); document.write( "(x - 5)3 Answer given is xcubed -15xsquared + 75x -125 How do I work this? I can do two brackets but having trouble with the three brackets. Thanks \n" ); document.write( "

Algebra.Com's Answer #99223 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
Expand:
\n" ); document.write( " $\"%28x-5%29%5E3\"$ Rewrite this as:
\n" ); document.write( " $\"%28x-5%29%28x-5%29%28x-5%29\"$ Now multiply the first two factors using the FOIL method.
\n" ); document.write( " $\"%28x-5%29%28x-5%29+=+x%5E2-5x-5x%2B25\"$ = $\"x%5E2-10x%2B25\"$ now multiply this by the third factor.
\n" ); document.write( " $\"%28x-5%29%28x%5E2-10x%2B25%29+=+x%5E3-10x%5E2%2B25x-5x%5E2%2B50x-125\"$ Simplify to get:
\n" ); document.write( " $\"x%5E3-15x%5E2%2B75x-125\"$
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