please help me solve this!! (7a+3b^2)(25a^3b-a^2b^3) where a=5; b=6

this is my assignment in class. i'm new with this and i cant find help from my classmates.can you help me?
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1 Answer

yu wanna EVALUEATE that thang at a=5 & b=6

(7a+3b^2)=7*5 +3*6^2=35+3*36=35+108=143

25a^3b ...yu shuer bout a^3b ???? that become 5^18=3.8146*10^12

very big

perhaps that spozed tu be (25*a^3)*b
by

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