document.write( "Question 221293: how do you solve this equation step by step (x^4+8x^2-1)-(x^2-3x^3+x^4) \n" ); document.write( "

Algebra.Com's Answer #166024 by sofiyac(983) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"%28x%5E4%2B8x%5E2-1%29-%28x%5E2-3x%5E3%2Bx%5E4%29\"$ ok, first we open parenthesis so everything in the second set of ( ) we change to the opposite sign due to the minus sign in front of the ( )
\n" ); document.write( " $\"x%5E4%2B8x%5E2-1-x%5E2%2B3x%5E3-x%5E4\"$ now we combine like terms so x^4 with x^4 (which is zero since x^4-x^4=0
\n" ); document.write( " $\"7x%5E2-1%2B3x%5E3\"$ \n" ); document.write( "

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