AM-1133

Binomial expansion

A Math · Secondary 4 · Medium · Binomial expansion

1. $1+20x+180x^2+960x^3$
2. $1+20x+90x^2+320x^3$
3. $1+10x+90x^2+320x^3$
4. $1+20x+200x^2+800x^3$

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