If you would like to know what is the value of 54 - 4 a^2 + 3 b^3 when a = -2 and b = 4, you can calculate this using the following steps:
54 - 4 a^2 + 3 b^3 = 54 - 4 (-2)^2 + 3 4^3 = 54 - 4 4 + 3 64 = 54 - 16 + 192 = 230
If you would like to know what is the value of 54 - 4 a^2 - 3 b^3 when a = -2 and b = 4, you can calculate this using the following steps:
54 - 4 a^2 - 3 b^3 = 54 - 4 (-2)^2 - 3 4^3 = 54 - 4 4 - 3 64 = 54 - 16 - 192 = -154
