Mathematics
Senior High
なんで
X七乗 5乗 三乗がでてきたのですか
(2) (x+1)(x²+x+1)(x²-x+1)²
(1=(x+1)(x²-x+1)×(x²+x+1)(x²−x+1)
=(x³+1){(x²+1)²-x2}
=(x³+1)(x²+x²+1)
=(x²+x+x³)+(x+x²+1)
sa=x'+x+x+x+x2+1
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