giup minh bai nay voi!
giai cac phuong trinh sau:
1) x – 8 = 3 – 2(x+ 4)
2) 2(x + 3) – 3(x – 1) = 2
3) 4(x – 5) – (3x – 1) = x – 19
4) 7 – ( x – 2) = 5(2x – 3)
5) 32 – 4(0,5y – 5) = 3y + 2
6) 3(x – 1) – x = 2x – 3
7) x( x – 1) = x(x + 3)
8) x(2x –3) –x2 + 2 = x(x –5) –1
9) (x – 1)(x + 3) = x2 – 4
10) (x – 2)(x – 5) = (x – 3)(x – 4)
11) ( 6x + 2)(x – 2) = 2x(3x – 5)
12) (x – 2)2 = (x – 3)(x + 2)
13) (x–1)(x +3) – (x+2)(x–3) = 0
14) (3x – 2)(4x + 3) = 2x(6x – 1)
15) 4x2 – (2x + 1)(2x – 1) = 0
16) (x + 3)(x – 2) = (x + 1)2
17) (x+7)(x–7) + x2 – 2 = 2(x2+5)
18) (x–1)2 + (x+3)2 = 2(x– 2)(x+2)
19) (x – 5)2 = (x + 3)2 + 2
20) (3x + 2)2 – (3x – 2)2 = 5x + 38
thank!!!!!!
Loga
Sinh Học lớp 12
