Show that the equation x^2+9y^2−8z^2=7 has no integer solutions x, y, z. Use proof by contradiction. Assume there is a solution and then show that you get a contradiction when you look at the equation mod 4.

2

step-by-2step explanation:

step-by-step explanation:

to find if any function is an inverse of the other, put the first equation in as x in the next one. then simplify and solve. if at the end you get the statement y = x, then it is an inverse. if you get anything else, it is not.