Answer:
2. Could not read
(-1 - 2² * 5) * 3²
= (-1 - 4 * 5) * 9
= (-1 - 20) * 9
= (-21) * 9
= -189
3.
16 + 6(5 - 4 * 6)
= 16 + 6(5 - 24)
= 16 + 6(-19)
= 16 - 114
= -98
4.
64 - 6(15 + 2(-3 + 8))
= 64 - 6(15 + 2(5))
= 64 - 6(15 + 10)
= 64 - 6(25)
= 64 - 150
= -86
