解不等式 (22 14:55:13)
解不等式 (22 14:55:13)
解关于x的不等式 x的平方+2x+1-a的平方小于等于0(a为常数)
解关于x的不等式 x的平方+2x+1-a的平方小于等于0(a为常数)
数学人气:284 ℃时间:2020-01-27 01:41:29
优质解答
x^2+2x+1-a^2
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