document.write( "Question 144866: expand and simplify the following expression: (x+5)^3 \n" ); document.write( "

Algebra.Com's Answer #105567 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
You can apply the binomial expansion to this:
\n" ); document.write( " $\"%28a%2Bb%29%5E3+=+a%5E3%2B3a%5E2b%2B3ab%5E2%2Bb%5E3\"$
\n" ); document.write( "In your problem, a = x and b = 5, so...
\n" ); document.write( " $\"%28x%2B5%29%5E3+=+x%5E3%2B3x%5E2%285%29%2B3x%285%29%5E2%2B5%5E3\"$ Simplifying this, we get:
\n" ); document.write( " $\"%28x%2B5%29%5E3+=+x%5E3%2B15x%5E2%2B75x%2B125\"$ \n" ); document.write( "

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