algebra
posted by mema .
Bob barber shop estimates their gross revenue for the second quarter to be given by the polynimal 3x^3+6x^2+3x+3. The shop estimates their cost for the quarter to be given by 9x^26x+5. Find and simplify the polyminal that will represent their profit. Will someone show me how to do this?

Profit = gross revenue  cost
Gross revenue = 3x^3+6x^2+3x+3
Cost = 9x^26x+5
Profit (group like terms and add)
= 3x^3+6x^2+3x+3 (9x^26x+5)
= 3x^3+6x^2+3x+3  9x^2+6x5
= 3x³ + 6x²9x² +3x+6x +35
= 3x³  3x³ + 9x 2
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