Tuyển Cộng tác viên Hoc24 nhiệm kì 30 tại đây: https://forms.gle/T8wg79khMGHeXQuDA
\(\left(2x-4\right)\left(x^2-1\right)=0\)
\(\Leftrightarrow2\left(x-2\right)\left(x-1\right)\left(x+1\right)=0\)
\(\Leftrightarrow\left[{}\begin{matrix}x-2=0\\x-1=0\\x+1=0\end{matrix}\right.\)
\(\Leftrightarrow\left[{}\begin{matrix}x=2\\x=1\\x=-1\end{matrix}\right.\)
tìm x
a(2x+1)(x-4)=(2x+1)^2
b(x-4)(x^2+4x-16)-(x^2-6)=2
c( 2x-1)^2-(3x+4)^2=0
d(9x+2)(x-1)-(3x-1)^2=0
e(2x+3)^2-4(x-1)(x-1)(x+1)=0
f)15x(x+4-6x-24=0
g)(4-10x)(2-3x)-30^2=0
giải giùm mik nha các bn :3
BT2: Tìm x 2, 3x(x-4)+2x-8=0 3, 4x(x-3)+x^2-9=0 4, x(x-1)-x^2+3x=0 5, x(2x-1)-2x^2+5x=16
1) (4-3x) (10x-5)=0
2) (7-2x) (4+8x) = 0
3) (9-7x) (11-3x) = 0
4) (7-14x) (x-2) = 0
5) (2x+1) (x-3) = 0
6) (8-3x) (-3x+5) = 0
7) (16-8x) (2-6x) = 0
8) (x+4) (6x-12) = 0
9) (11-33x) (x+11) = 0
10) (x-1/4) (x+5/6) = 0
11) (7/8-2x) (3x+1/3) = 0
12) 3x - 2x^2 = 0
13) 5x + 10x^2 = 0
14) 4x + 3x^2 = 0
15) -8x^2 + x =0
16) 10x^2 - 15x = 0
17) x^2 -4 =0
18) 9 - x^2 = 0
19) x^2 -1 = 0
20) (x-3) (2x-1) = (2x-1) ( 2x+3)
21) (5+4x) (-x+2) = (5+4x) (7+5x)
22) (4+x) (x-5) = (3x-8) (x-5) = 0
23) (3x-8) (7-21x) - (9+2x) (7-21x)
24) (10+ 7x) (x+1) = (9x-2)(x-1)
25) (9x-4) (x-1/2) - (x-1/2) (6+x) = 0
26) 9x^2 - 1 = (3x-1) (x+4)
27) (x+7) (3x+1) = 49-x^2
28) (2x+1)^2 = (x-1)^2
29)x^3- 5x^2+6x = 0
30) 3x^2 + 5x + 2 = 0
Giảii giúpp mìnhh đyy mọii ngườii .
1) 2x^4-7x^2-4=0
2)(x62+5x^2)-2(x^2+5x)-24=0
3)x^2-2x-3(x-1)+3=0
4)(x+1/x)^2+2(x+1/x)-8=0
5)x(x+1)(x+2)(2x+3)-18=0
7)(x^2+4x+7)=(x+4)nhân vs căn bậc hai cua x^2 +2
1) 2x+6=0
2)(x^2-2x+1)-4=0
3)x-2/x+2+3/x-2=x^2-11/x^2-4
4)x(x^2-1)=0
5)4x+20=0
6)x+3/x+1+x-2/x=2
7)1+2x-5/6=3-x/4
8x+2/x-2-1/x=2/x^2-2x
9)2(x+1)=5x-7
giải các phương trình sau:
1)4+2x.(2x+4)=-x
2)(2x-3)^2=2x-3
3)x^2-9x+20=0
4)x^2-1+2.(x+1)=0
5)16x^2-8x+1=4.(x+3).(4x-1)
6)27x^2.(x+3)-12.(x^2+3x)=0
A) 2x³+6x²=x²+3x
B) (2x+5)²=(x+2)²
C) x²-5x+6=0
D) (2x-7)²-6(2x-7)(x-3)=0
E) (x-2)(x+1)=x²-4
G) 2x(2x-3)=(3-2x)(2-5x)
H) (1-x)(5x+3)=(3x-7)(x-1)
F) (x+6)(3x-1)+x+6=0
I) (4x-1)(x-3)=(x-3)(5x+2)
K) (x+4)(5x+9)-x-4=0
H) (x+3)(x-5)+(x+3)(3x-4)=0
M) (2x+3)(-x+7)=0
bài 7 tìm x
1,x(x+3)-5(x+3)=0 2,5x(x-1)=x-1
3,(x+1)=(x+1)\(^2\) 4,x(2x-3)-2(3-2x)=0
5,\(\left(x-2\right)^2-4=0\) 6,\(36x^2=49\)
7,\(2x\left(x-6\right)-x+6=0\) 8,\(3x\left(2x-1\right)-24x+12=0\)
9,\(x^2-6x+8=0\) 10,\(x^2+2x-15=0\)
Giải phương trình
a ) 2 x + 3 x - 4 = 2 x - 1 x + 2 - 27
b ) x 2 - 4 - x + 5 2 - x = 0
c ) x + 2 x - 2 - x - 2 x + 2 = 4 x 2 - 4
d ) x + 1 x - 1 - x + 2 x + 3 + 4 x 2 + 2 x - 3 = 0
A) 2x³+6x²=x²+3x
B) (2x+5)²=(x+2)²
C) x²-5x+6=0
D) (2x-7)²-6(2x-7)(x-3)=0
E) (x-2)(x+1)=x²-4
G) 2x(2x-3)=(3-2x)(2-5x)
H) (1-x)(5x+3)=(3x-7)(x-1)
F) (x+6)(3x-1)+x+6=0
I) (4x-1)(x-3)=(x-3)(5x+2)
K) (x+4)(5x+9)-x-4=0
H) (x+3)(x-5)+(x+3)(3x-4)=0
