亲们帮我看下这道一元二次不等式对不对也帮我看看过程对不对[两题}
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亲们帮我看下这道一元二次不等式对不对也帮我看看过程对不对[两题}
亲们帮我看下这道一元二次不等式对不对也帮我看看过程对不对[两题}
亲们帮我看下这道一元二次不等式对不对也帮我看看过程对不对[两题}
[-1,6]
[-3,1]
(x+1)(x-6)≤0
所以是[-1,6]
两边乘-1
x²+2x-3=(x+3)(x-1)≤0
[-3,1]