add( 3+5y+4y²+7y³)(-7+2y+3y³)(5-6y-9y³+2y²)
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Answer:
1+y+6y²+y³
Step-by-step explanation:
( 3+5y+4y²+7y³)(-7+2y+3y³)(5-6y-9y³+2y²)
= 3+5y+4y²+7y³-7+2y+3y³5-6y-9y³+2y²
=1+y+6y²+y³
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