[square root (78)] squared = 78. There is not a surd from for an integer.
39
Deductive reasoning, trial and error. The square root of 78 will be between 8 and 9, closer to 9. 8.7 squared = 75.7 8.8 squared = 77.4 8.9 squared = 79.2 8.8 is the closest without going over.
8.83
It is 78. There is no need for a decimal point after the number and it would be wrong to write it as 78.0 since that would suggest a level of accuracy that is not justified.
[square root (78)] squared = 78. There is not a surd from for an integer.
The square root of 6084 is 78.
39
√78
78.0
sqrt(78) = √78. There is no simplification.
Yes
No
Deductive reasoning, trial and error. The square root of 78 will be between 8 and 9, closer to 9. 8.7 squared = 75.7 8.8 squared = 77.4 8.9 squared = 79.2 8.8 is the closest without going over.
8.83
78.0
Expressed as a surd in its simplest form, sqrt(312) is equal to 2 sqrt(78). Expressed as a decimal, rounded to two decimal places, sqrt(312) is equal to ±17.66.