Posted by Christy on Saturday, July 17, 2010 at 5:41pm.
( 2X^4 + 9X^3 -1 ) - ( 9X^2 -2X + 4 ) To remove a parenthesis with a negative sign out front, change the
sign of each term within the pa-
renthesis:
2X^4 + 9X^3 -1 -9X^2 + 2X -4
Combine like-terms:
2X^4 + 9X^3 -9X^2 +2X -5.
There were only two like-terms (-1 and -4 ); i don't believe this
can be simplified further.
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