famouzgal
famouzgal famouzgal
  • 19-08-2018
  • Mathematics
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mmcuebas
mmcuebas mmcuebas
  • 19-08-2018
He messed up in the beginning with the 4.

It's supposed to be
(3 - -4)
(3 + 4)

and not

(3-4)

That's where he messed up.




I find it interesting how he uses Xa Ya and Xb Yb. In my school we use X1 Y1 and X2 Y2.
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