Answer:
Step-by-step explanation:
88 can be rewritten as 8 x 10 and 8 can be rewritten as making a 2 come out of the root.
10 can be rewritten as 2 x 5.
2*2 can also be rewritten as making a 2 come out of the root.
We can't keep simplifying the root.
The answer is D, i.e. the system was solved via elimination
If you multiply the first equation by 5, the system becomes
If you sum the two equations, you get
And so if you substitute the second equation of system A with this new equation, you'll get system B.