You have the following expression:
√(2a⁵ + c) - (b - 2a)
where a = 5, b = 7 and c = 14
In order to simplify the given expression, you first replace the values of paramters a,b and c, just as follow:
√(2(5)⁵ + 14) - (7 - 2(5))
= √(2(25) + 14) - (7 - 10) "simplify operations inside the parenthesis"
= √(50 + 14) - (-3) "take into account the multiplication of sign"
= √(64) + 3 "8² = 64, then √64 = 8"
= 8 + 3
=11
Hence, the solution to the given expression is 11