(3x+y)(7x-y) find the product
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Answer:
21x + 4xy - y^2
Step-by-step explanation:
- (3x+y)(7x-y)
- (3 × 7x) + (y × 7x) - (3x × y) - (y × y)
- 21x + 7xy - 3xy - y^2
- 21x + 4xy - y^2
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