Question

5) (x– 5)(x – 1)= (x – 1)(x – 2)

6) 6(х - 3)(х — 4) - 6х(х — 2) = 4

7)-(x + 3)(x – 4) + (x + 1)(x – 1) = 10

8) (2x – 1)(x – 2) – (x + 3)(2x – 7) =3

9) (х - 5)(4 — х) — (х — 1)(х + 3) = -2x^2

10 (4x + 1)(x – 3) - (x- 7)(4x – 1)=15

11) (x + 1)(x² – x + 1) – x(x² – 3) = 4

12) (x – 3)(x² + 3x+9)+ x(5 – x²?) = 6x

13) (3x – 5)(x + 1)– (3x – 1)(x+ 1)=x - 4

14) 5(x – 3)(x – 7)– (5x+ 1)(x – 2)= 8

Answer 1

minh ko biết toán lớp 8 mik lớp 4 mà giải hộ mik với :(
68 x 5 + 68 x 5, 444 + 556 + 6825 + 2175

12 739 - (7000 - 739) 

Answer 2

ko biết

Answer 3

mik lớp 4 mà