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Toán Lớp 7: Rút gọn a)-6x² (x+5)² -(x-3)²+(x²-2)(2x²+1)-4x²(3x-4)² b.(5x-3y)²-(4x+y)(4x-y)-(3x+5y)²+(x-3y)(x+y) GIÚP MK VS Ạ MK TẶNG 5 SAO

Home/ Toán Lớp 7: Rút gọn a)-6x² (x+5)² -(x-3)²+(x²-2)(2x²+1)-4x²(3x-4)² b.(5x-3y)²-(4x+y)(4x-y)-(3x+5y)²+(x-3y)(x+y) GIÚP MK VS Ạ MK TẶNG 5 SAO

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