Question

(a-5)^2 if a=19/5-√6 plz answer fast​

Answer 1

(a-5) ^2 = a^2 + 5^2 -2×a×5

= a^2 +25 -10a

put the value of a

(a-5) ^2 = (19/5-√6)^2 +25 -10(19/5-√6)

= 186/25 -88√6/5

by solving the values