[질문] 1.(a+2b)²(a-2b)²2.(2x-1)²(2x+1)²3.(x-y+z)(x-y-z) 4.(x²-x+1)(x²+x+1)정답이?
조회수 70 | 2010.01.14 | 문서번호:
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[지식맨]
2010.01.14 1.(a+2b)²(a-2b)²=(a²-4b²)²=a⁴-8a²b²+16b⁴/2.(2x-1)²(2x+1)=(4x-1)²=16x²-8x²+1/ 3.={x-y)-z)}{x-y)+z)=x²-2xy+y²-z²/4.(x²-x+1)(x²+x+1)=공식=x⁴+ x² + 1죠
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