The only rational root is -2.336071261738453
The other roots are complex (imaginary).
Answer:

Step-by-step explanation:
Given that,
The diameter of a proton is 1.7 x 10⁻¹⁵ meters
The diameter of an atom is 5 x 10⁻¹⁰ meters.
We need to find the difference in the diameters.

So, the difference in the diameter is
.
The equation of the sum 42 and a number 'n' is equal to 51
42+n=51
51-42=n
n=9