Tìm x biết

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Bài 11: Tìm x biết

1) \( (2x-1)^2 -(4x^2-1)=0 \)

2) \( (x+2)^2 -x(x-3)=2 \)

3) \( (x-5)^2 -x(x+2)=5 \)

4) \( (x-1)^2 +x(4-x)=11 \)

5) \( (x-3)(x+3)=(x-5)^2 \)

6) \( (2x+1)^2 -4x(x-1)=17 \)

7) \( (3x+1)^2 -9x(x-2)=25 \)

8) \( (3x-2)(3x+2)-9(x-1)x=0 \)

9) \( (x+2)^2 -(x-2)(x+2)=0 \)

10) \( (x+2)^2 -x(x-3)(x+3)=-3 \)

11) \( (3x+2)^2 -(3x-5)(3x+2)=0 \)

12) \( (x+3)^2 -(x+2)(x-2)=4x+17 \)

13) \( 3(x-1)^2 +(x+5)(2-3x)=-25 \)

14) \( (x+3)^2 +(x-2)^2 =2x^2 \)