what are all values of x for which 4-x^2≥x-2?
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what are all values of x for which 4-x^2≥x-2?
what are all values of x for which 4-x^2≥x-2?
what are all values of x for which 4-x^2≥x-2?
4-X^2》X-2
变换一下
X^2+X-6《0
(X+3)(X-2)《0
因此
-3《X《2
意思就是x的取值范围
4-x²>=x-2 解得 -2≤x≤1
what are all values of x for which 4-x^2≥x-2?
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