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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 △ABC, the measure of x is 128∘
Oopsies.... hehe
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. kn≠nkn−1