Thực hiện phép tính: (x+2)^2 + 2(x+1)
----- Nội dung ảnh -----
**Bài 12: Thực hiện phép tính:**
1) \( (x+2)^2 + 2(x+1) \)
2) \( (x-4)^2 - (x+1)(x+2) \)
3) \( (x-y)^2 + 2x(y) \)
4) \( 3(x+1)+(x+1)^2 \)
5) \( (x+5)2x - (x-3)^2 \)
6) \( (x+4+3y)-(y-z)^2 \)
7) \( (7x-1)(x-2)+(x+4)^2 \)
8) \( (x-3)(x+3)-(x-1)(x-3) \)
9) \( (2-x)(2y-5)-(2x-y)^2 \)
10) \( 3x(x-1)(x-3)^2 \)
11) \(-5x(x^4)-(x-1)^2 \)
12) \( (x-2)(x+2)-(4x(2x+1)) \)
13) \( (2-x)(3)-(5x)(x+1)^2 \)
14) \( (x-5)(x+5)+(x^2)+(3x-2)^2 \)
**Bài 13: Tìm x, biết:**
**Bài 12: Thực hiện phép tính:**
1) \( (x+2)^2 + 2(x+1) \)
2) \( (x-4)^2 - (x+1)(x+2) \)
3) \( (x-y)^2 + 2x(y) \)
4) \( 3(x+1)+(x+1)^2 \)
5) \( (x+5)2x - (x-3)^2 \)
6) \( (x+4+3y)-(y-z)^2 \)
7) \( (7x-1)(x-2)+(x+4)^2 \)
8) \( (x-3)(x+3)-(x-1)(x-3) \)
9) \( (2-x)(2y-5)-(2x-y)^2 \)
10) \( 3x(x-1)(x-3)^2 \)
11) \(-5x(x^4)-(x-1)^2 \)
12) \( (x-2)(x+2)-(4x(2x+1)) \)
13) \( (2-x)(3)-(5x)(x+1)^2 \)
14) \( (x-5)(x+5)+(x^2)+(3x-2)^2 \)
**Bài 13: Tìm x, biết:**