In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Q: Problem: find value of x : ( 422 + 404 ) ^ 2 − ( 4 × 422 × 404 ) = x . 
Options: a ) 234 , b ) 267 , c ) 324 , d ) 356 , e ) 577

A: c
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Q: Problem: what is the value of 3 x ^ 2 − 1.8 x + 0.8 for x = 0.6 ? 
Options: a ) − 0.3 , b ) 0.8 , c ) 0.3 , d ) 1.08 , e ) 2.46

A: b
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Q: Problem: if n = 5 ^ 11 – 5 , what is the units digit of n ? 
Options: a ) 0 , b ) 1 , c ) 4 , d ) 6 , e ) 8

A:
a
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