x^2+(k+2)x+(k+1)因式分解
人气:250 ℃ 时间:2020-07-03 03:33:54
解答
原式=x²+kx+2x+k+1
=(x²+2x+1)+(kx+k)
=(x+1)²+k(x+1)
=(x+1)(x+1+k)
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