解不等式:(3x+4)(3x-4)>9(x-2)(x+3).
人气:166 ℃ 时间:2020-05-18 14:56:06
解答
去括号,得9x
2-12x+12x-16>9x
2+27x-18x-54,
移项,得-27x+18x>-54+16,
合并同类项,得-9x>-38,
∴x<
.
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