at 8:26 minutes, why are you dividing the two equations to eliminate the 2 and why do you then not consider the negative in the second equation after eliminating the 2. I thought that negative is meant to change the signs inside the bracket of that second equation
It would change the signs, but it would change the signs of all the terms. Since it is applied to everything on the left side, and -0 = 0, we can divide both sides by -1 and end up with the same result
that helped a lot thanksss
at 8:26 minutes, why are you dividing the two equations to eliminate the 2 and why do you then not consider the negative in the second equation after eliminating the 2. I thought that negative is meant to change the signs inside the bracket of that second equation
It would change the signs, but it would change the signs of all the terms. Since it is applied to everything on the left side, and -0 = 0, we can divide both sides by -1 and end up with the same result
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