A couple of beginner's questions

[p.numminen]

Question 1:
How would I command Octave in order to find all the values of x that would
make the functions

f1(x) = 1.035568^x * 1000 - 1000 and
f2(x) = (1.025668^x * 1000 - 1000) * 0.72

equal with each other?


Question 2:
How would I command Octave in order to solve the equation

1.035568^x * 1000 - 1.025668^x * 720 - 280 = 0

?
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