UPSKILL MATH PLUS

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1. Find the unit digit of the numeric expression \(16^{23} + 71^{48} + 59^{61}\).
 
Answer:
 
Unit digit \(=\)
 
2. If \(X = 5x^2 + 7x + 8\) and \(Y = 4x^2 - 7x + 3\), then find the degree of \(X + Y\).
 
Answer:
 
Degree of \(X + Y =\)