FFS, are you 'tards akshully SO fucking stoopid that you believe 1 = 2? and then you spew all the sophomoric philosophy about BS marriage, procreation, and brain hemispheres! and you believe you're qualified to contribute to this board?
this is a high-school-level problem to discover the FLAW in the "proof," NOT an actual proof! and the first fuckwit to reply might have the right idea, but is utterly incapable of expressing it clearly.
look, dipshits, if a = b, then a – b = 0, for ANY a,b. likewise, a squared minus b squared likewise equals zero! division by zero is UNDEFINED, and the special case of 0/0 is INDETERMINATE, meaning ANY number can be chosen as the answer, which is what the guy does in step five!
fucking 9th graders are expected to be able to see the logical flaw. and anyone with AN OUNCE of common sense ought to know that 1 DOES NOT EQUAL 2. get the fuck off of this board and stick to reading "graphic novels" in your mommy's basement and watching anime, you millennial fuckwit jackoffs!