Toán Lớp 8: a)(x+2)(x+3)(x-7)(x-8)=144 b)x^2/3+48/x^2=10(x/3-4/x) -

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Toán Lớp 8: a)(x+2)(x+3)(x-7)(x-8)=144 b)x^2/3+48/x^2=10(x/3-4/x)