Answer:
i cant post the official answer because its "not school related" so i'll post it again :)
Explanation:
add 51+18 and you have your answer enjoy :D
m1 = 48
this s a sequence of -9
it could only be + square by 3 if shown in question initially as squared m^2 so we cna presume the answer is m = - 9 m1 = 48
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