Tìm x, biết:
SOS cứu mình
giúp mình với, mình chấm max điểm
----- Nội dung ảnh -----
Bài 14: Tìm x, biết
1) \( (x-5)(x+5)-(x+3)^2+3(x-2)^2=(x+1)^2-(x+4)(x-4)+3x^2 \)
2) \( (2x+3)^2+(x-1)(x+1)=5(x+2)^2-(x-5)(x+1)+(x+4) \)
3) \( (-x+5)(-x-2)+(x-7)(x+7)=(3x+1)^2-(3x-2)(3x+2) \)
4) \( (5x-1)(x+1)-2(x-3)^2=(3x-1)-(x+4)^2+(x^2-x) \)
5) \( (4x-1)^2-(3x+2)(3x-2)=(7x-1)^2-(2x+1)^2-4x^2+7 \)
6) \( (2x+3)^2-(5x-4)(5x+4)=(x+5)^2-(3x-1)(7x+2)-(x^2-1+1) \)
giúp mình với, mình chấm max điểm
----- Nội dung ảnh -----
Bài 14: Tìm x, biết
1) \( (x-5)(x+5)-(x+3)^2+3(x-2)^2=(x+1)^2-(x+4)(x-4)+3x^2 \)
2) \( (2x+3)^2+(x-1)(x+1)=5(x+2)^2-(x-5)(x+1)+(x+4) \)
3) \( (-x+5)(-x-2)+(x-7)(x+7)=(3x+1)^2-(3x-2)(3x+2) \)
4) \( (5x-1)(x+1)-2(x-3)^2=(3x-1)-(x+4)^2+(x^2-x) \)
5) \( (4x-1)^2-(3x+2)(3x-2)=(7x-1)^2-(2x+1)^2-4x^2+7 \)
6) \( (2x+3)^2-(5x-4)(5x+4)=(x+5)^2-(3x-1)(7x+2)-(x^2-1+1) \)