\(\Rightarrow2x-x=-2-2\Rightarrow x=-4\)
Đúng 1
Bình luận (0)
Các câu hỏi tương tự
Tìm x:
a) x(x+1)(x+2)(x+3) = (x2+3x+1)2+x
b) (x+1)(x+3)(x+5)(x+7) = (x2+8x+11)2+2x
c) (x2-x+1)(x2+x+1)(x-1)(x+1)=63
tìm x, biết:
a) x2-2x+1=25
b) (5x+1)2-(5x-3)(5x+3)=30
c) (x-1)(x2+x+1)-x(x+2)(x-2)=5
d) (x-2)3-(x-3)(x2+3x+9)+6(x+1)2=15
tìm x biết:
a) x2-2x+1=25
b) (5x+1)2-(5x-3)(5x+3)=30
c) (x-1)(x2+x+1)-x(x+2)(x-2)=5
d) (x-2)3-(x-3)(x2+3x+9)+6(x+1)2=15
Tìm x :
b )(x-1) . ( x2 +x +1) -x.(x-3) . (x+3 )=8
c)( X2 + 2 ) . (x-4 ) - ( X+2 ). ( x2 +4x +4=-16
Tìm x
a) x2(x+1)+x+1=0
b) x2-x=-2x2+2x
c) 2x2(x-1)+x2=x
d) (x-2)(x2+4)=x2-2x
Bài 1: Tìm x:
1) (x-3)3 -( x-3)(x2+ 3x+9) +6( x+1)2+ 3x2 = -33
2) (X-3)( X2+ 3X+9) - X(X-2)( 2+X) = 1
3) (X+2)(X2 - 2X+4) – X(X-3)(X+3) = 26
Tìm x biết:a)
(
x
–
1
)
3
+
(
2
–
x
)
(
4
+
2
x
+
x
2
)
+ 3x(x + 2) 16;b) (x + 2)(
x...
Đọc tiếp
Tìm x biết:
a) ( x – 1 ) 3 + ( 2 – x ) ( 4 + 2 x + x 2 ) + 3x(x + 2) = 16;
b) (x + 2)( x 2 – 2x + 4) – x( x 2 – 2) = 15.
: Tìm x biết
a) (x + 1)3x – x( x -2)2 + x -1 = 0
b) ( x – 2)3 – x2(x -6) =4
c) ( x -1)( x2 + x + 1) – x( x+2)(x -2) =5
d) 3(x -1)2 – 3x( x -5) =1
Rút gọn biểu thức:
a) (x + 2)(x – 2) – (x + 1)2
b) (2x – 1)(4x2 + 2x + 1) – (2x + 1)( 4x2 – 2x + 1)
3. Tìm x biết:
a) (x + 2)(x2 – 2x + 4) – x(x2 – 2) = 15
b) (x – 1)3 – x(x2 – 3x – 4) = 13
thanks
1/Rút gọn các biểu thức: a)(x+1)2-(x-1)2-3(x+1)(x-1)
b)5(x+2)(x-2)-(2x-3)2-x2+17
c)(x-3)3-(x-3)(x2+3x+9)+6(x+1)2
2/ Tìm x a) (x+4)2-(x+1)(x-1)=16
b) (x+2)(x2-2x+4)-x(x2+2)=15