8(5x+9y)^2 + 12(5x+9y)
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Answer:
200x2+720xy+648y2+60x+108y
Step-by-step explanation:
8(5x+9y)2+12(5x+9y)
Distribute:
=200x2+720xy+648y2+(12)(5x)+(12)(9y)
=200x2+720xy+648y2+60x+108y
Answer:
=200x2+720xy+648y2+60x+108y
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