Answer:
53. ±6
51. 2
Step-by-step explanation:
According to the Order of Operations [GEMS\BOMDAS\PEMDAS etc.], in this case, evaluate everything in grouping symbols first, then evaluate the exponents to avoid confusion:

I am joyous to assist you anytime.
Answer:
300*15
Step-by-step explanation:
thats it
Answer:
unbias
Step-by-step explanation:
Not asking specific group or person.
Answer:8.9
Step-by-step explanation:
192/43 is about 4.46
4.46*2 is about 8.9