3x²=75; 2x³+54=0 求不等式6-2(x-1)≤4(x+1)的负整数解
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3x²=75; 2x³+54=0 求不等式6-2(x-1)≤4(x+1)的负整数解
3x²=75; 2x³+54=0 求不等式6-2(x-1)≤4(x+1)的负整数解
3x²=75; 2x³+54=0 求不等式6-2(x-1)≤4(x+1)的负整数解
3x²=75
x²=25
x=±5
2x³+54=0
2x³=-54
x³=-27
x=-3
6-2(x-1)≤4(x+1)
6-2x+2≤4x+4
-6x≤-4
x≥2/3
不等式没有负整数解.