plaintainmountain

[redacted]

This is pretty funny. Two different personalities from ChatGPT. Wonder what GA will have to say about this. 

$8/2(4)=4*4=16$.  

The answer is $4(2+2)=16$

Assuming that $O$ is the circumcenter of $\triangle ABC$, the measure of x is $128^{\circ}$

Er History I'm not sure...

I'm assuming you want the determinant of this matrix, which is $(-3)(4) + (-2)(5) = -22$. 

Your first statement is false. $k^n \ne nk^{n-1}$