{100:[45-45:(-9)]-32}×5+2×5mũ 2

`Accnswer`

`{100:[45-45:(-9)]-32}.5+2.5^2`

`={100:[45+5]-32}.5+2.25`

`={100:50-32}.5+50`

`={2-32}.5+50`

`=-30.5+50`

`=-150+50`

`=-100`