who will give the answer i will follow them.
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0
Answer:
(12a)²-9²
a²-b²......
hope it helps you
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1
Step-by-step explanation:
(12a-9) ( 12a+9)
using the formula (a-b) ( a+b) = a^2- b^2
a= 12a , b= 9
=> a^2- b^2
=> (12a)^2 - (9)^2
=> 144a^2 - 81 ans
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