#62 SUM OF COEFFICIENT OF BINOMIAL EXPANSION FORMULA

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Bakit po - yung coefficient ng z? Diba +1 coefficient nya sir?

kevinbelza
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Hello sir goodmorning po, Im studying this for the boards right now. Na confuse ako konti.

I tried a smaller one, say (2x-1)^2
Using your solution, (2-1)^2- (-1)^2, is 1-1 is 0

Pero if you will expand, magiging, 4x^2-4x+1

So 4-4+1, so 1, bat magkaiba? Huehue. Salamat ho sa sagot.

kevinbelza
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