3. Find the square root of the rational expression

Answer variants:

|1 x + 7 y + 8 z|

|1 x - 7 y - 8 z|

|1 x + 7 y - 8 z|

|1 x - 7 y + 8 z|

The square root of the expression

1 x^{2} + {49 y}^{2} + {64 z}^{2} - 14 xy - 112 yz + 16 zx

Did you find an error?