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bk17c4a
2 năm trước
A) 5x (x-3) (x-1) -4x (x^2-2x) B) 4x (x^2-x+3) - (x-6) (x-5) *tìm x* A) 2x (x-3)- x (2x+3)=18 B)x (5x^2-2)+5x (1-x^2)=3^4 C) (x-5) (x+2)+(x+1) (2-x)=15 D) (2x-3) (x+5)-(x-2) (2x+1)=3
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