解不等式 (x-3)(x-2)+18≤(x+9)(x+1)
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解不等式 (x-3)(x-2)+18≤(x+9)(x+1)
解不等式 (x-3)(x-2)+18≤(x+9)(x+1)
解不等式 (x-3)(x-2)+18≤(x+9)(x+1)
(x-3)(x-2)+18≤(x+9)(x+1)
x^2-5x+6+18≤x^2+10x+9
15x≥15
x≥1
x^2-5x+6+18<=x^2+10x+9
15<=15x
x>=1
先拆括号
X的平方-5X+24≤X的平方+10X+9
15X≥15
X≥1