Tìm x

----- Nội dung dịch tự động từ ảnh -----
25) (-x + 5)(x + 3) + (2x
26) (x + 3)(x - 1)-(x-7)(x - 6)
27) (-x-2)(x + 1) - (x - 5)(-x + 1)
28) 5x(x - 3)(x - 1) - 4x(x² - 2x)
29) -4x(x + 3)(x-4)- 3x(x² - x + 1)
30)-3(x + 4)(x-7)+7(x - 5)(x - 1)
31) 4x(x²-x + 3) - (x-6)(x - 5)
Bài 6: Tìm x, biết
1) 4x(x-5)-(x-1) (4x-3) = 5
* 3)(x - 5)(x-4) - (x + 1)(x - 2) = 7
5) (x - 5)(x-1) = (x-1)(x-2)
y7) -(x+3)(x-4) + (x-1)(x+1)= 10
X2) (3x 4)(x - 2) = 3x(x - 9) - 3
4) 5x(x-3)=(x-2)(5x-1)-5
X6) 6(x-3)(x-4) - 6x(x − 2) = 4
-
*8) (2x - 1)(x - 2) - (x + 3)(2x - 7) = 3
89) (x - 5)(-x + 4) - (x - 1)(x + 3) = -2x²
6
10
Bài
1)
7 3
% 5
7
Bài