解不等式:3(x+2)^2-3(x+1)(x-1)≤12x^2-(6x-3)(2x+1)(需过程)
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解不等式:3(x+2)^2-3(x+1)(x-1)≤12x^2-(6x-3)(2x+1)(需过程)
解不等式:3(x+2)^2-3(x+1)(x-1)≤12x^2-(6x-3)(2x+1)(需过程)
解不等式:3(x+2)^2-3(x+1)(x-1)≤12x^2-(6x-3)(2x+1)(需过程)
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