Giải các phương trình sau :
1) x2 – 7x = 0
2) 2x3 – 6x = 0
3) 2x(x + 3) + 5(x + 3) = 0
4) 3x(x – 1) + 6(1- x) = 0
5) x2 – 16 +(x – 4)(3x + 1) = 0
6) x2 + 3x – 4 = 0
7) 3x( x+5) -2x -10 = 0
8) x(x – 1) + x – 1 = 0
9) x2 + 2x +1– 3(x + 1) = 0
10) x(x + 2) – 3(–x – 2)=
11) x(2 – x) – (x – 2) = 0
12) x(2x –3) = (x – 4)(2x –3)
13) x2 - 9x + 20 = 0
14) (3x + 4)(x – 4) = x2 – 8x +16
15) x3 – 5x2 + 4x = 0
16) ( x – 3)2 = ( 2x +1)2
Loga
Sinh Học lớp 12
