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| 1. |
By using binomial expansion, expand (1+x+x²)³ |
| Answer» Use (1+x) as a and x² as b Using formula of (a+b)³ (1+x)³+x³+3(1+x)(x²)(1+x+x²) 1+x³+3×(1+x)+x³+3(x²+x³)(1+x+x²) Now u can solve it | |