\(2x^2+3x-1=0\)
\(\Rightarrow2x^2+3x+1=2\)
\(\Rightarrow2x^2+2x+x+1=2\)
\(\Rightarrow2x\left(x+1\right)+1\left(x+1\right)=2\)
\(\Rightarrow\left(2x+1\right)\left(x+1\right)=2\)
Xét ước
3x^2-2x(x+1)=0 TÌM x
Bài 1: Tìm x
a) (x+2)(x2-2x+4)+(x+2)2=0
b) 9x2-4-(3x-2)2=0
Tìm x:
a)x(2x-4)-(x-2)(2x+3)
b)x(3x+2)+(x+1)^2-(2x-5)(2x+5)=-12
c)(x-1)(x^2+x+1)-x(x-3)^2=6x^2
d)x^2-x=0
e)(x+2)(x-3)-x-2=0
f)3x^3-27x
Giup mik vs nha
Giải các phương trình sau
1. ( x-6) ( x+7) - 5 ( 6-x) ( 3x-1)=0
2. ( 3x+1)^2 - ( 2x-5)^3=0
3. ( 4x+3)^2 -4 (x-1)^2=0
4. (x+5)^2 (3x+2)^2 =x^2(x+5)^2
5. x(x+3)^2 - 4x=0
Bài 1: Tìm x biết a) x^3 - 4x^2 - x + 4= 0 b) x^3 - 3x^2 + 3x + 1=0 c) x^3 + 3x^2 - 4x - 12=0 d) (x-2)^2 - 4x +8 =0
Bài 1 rút gọn
a) (x+3)(x-3)-(x-3)2
b) (2x+1)2+2(2x+1)(x-1)+(x-1)2
c) x(x-3)(x+3)-(x^2 +1)(x^2-1)
Bài 2 tìm x
a) (x+2)2-x^2-3x=21
b) x^2+x-12=0
c) x^3-3x^2+3x-126=0
d) x^3-5x^2+8x-4=0
e) 2x^3-x^2+3x+6=0
f) (x^2+x) (x^2+x+1)=6
Tìm x biết :
a) 3x(x-1)+x-1=0
b) (x-2)(x2+2x+7+2(x2-4)-5(x-2)=0
c) (2x-1)2-25=0
d) x3+27+(x+3)(x-9)=0
3x^2-2x(x+1)= -1 TÌM x
1, tìm x biết
a, (2x-1)^2-2x+1=0
b, (4x-3)^2-12x+9=0
c, 3x^2-48=0
