Question

71.1 - 2.27 × (4.64 - 2.64)4

Answer 1

PEMDAS
doing the stuff in the parenthesis first

71.1 - 2.27 x (2)4

then multiply left to right
71.1 - 4.54*4
71.1 - 18.16
52.94

therefore 52.94 should be your answer