Verified answer

5 - 7*8 + 3 - 4*(8² - 4³) + 45/9 - 64¹/² =

5 - 56 + 3 - 4*(64 - 64) + 5 - 8 =

5 + 3 - 8 + 5 - 56 = 5 - 56 = -51

pronto

5-56+3-(64-64)+5-8=

8-56+3-0+5-8=

-56+8=-48