Question 1190620
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"Show that y^2+1+8^a"<br>
That makes no sense.  The thing to be shown needs to be an equation of some sort -- not just an expression.<br>
And you're probably better off using different notation for logarithms -- e.g. "log4(y-1)" instead of "log 4^(y-1)".  "^" in typed text denotes exponents -- not logs.<br>
Re-post....<br>