`x^2(x-2) - 9(x-2) = 0`
`<=> (x^2-9)(x-2)=0`
`<=> (x-3)(x+3)(x-2)=0`
`<=>` \(\left[{}\begin{matrix}x=3\\x=-3\\x=2\end{matrix}\right.\)
`x^2(x-2) - 9(x-2) = 0`
`<=> (x^2-9)(x-2)=0`
`<=> (x-3)(x+3)(x-2)=0`
`<=>` \(\left[{}\begin{matrix}x=3\\x=-3\\x=2\end{matrix}\right.\)
Bài 5: Giải phương trình
a) x ( x+1) ( x – 1) ( x+2) =24
b) ( x – 4) ( x – 5) ( x – 6) ( x – 7) = 1680
c) 2x ( 8x – 1) 2 ( 4x – 1) = 9
d) ( 2x + 1)( x + 1) 2 ( 2x + 3) = 18
e) (x 2 – 6x +9 ) 2 – 15( x 2 – 6x +10) = 1
f) ( x 2 + 1) 2 + 3x ( x 2 + 1) + 2x 2 = 0
g) ( x 2 – 9) 2 = 12x + 1
Bài 6: Giải phương trình
a) ( x + 3) 4 + ( x+ 5 ) 4 = 16
b) ( x – 2) 4 + ( x – 3) 4 = 1
Bài 5: Giải phương trình
a) x ( x+1) ( x – 1) ( x+2) =24
b) ( x – 4) ( x – 5) ( x – 6) ( x – 7) = 1680
c) 2x ( 8x – 1) 2 ( 4x – 1) = 9
d) ( 2x + 1)( x + 1) 2 ( 2x + 3) = 18
e) (x 2 – 6x +9 ) 2 – 15( x 2 – 6x +10) = 1
f) ( x 2 + 1) 2 + 3x ( x 2 + 1) + 2x 2 = 0
g) ( x 2 – 9) 2 = 12x + 1
Bài 6: Giải phương trình
a) ( x + 3) 4 + ( x+ 5 ) 4 = 16
b) ( x – 2) 4 + ( x – 3) 4 = 1
a) (2x-3)²=9
b) (x²-16)²-16(x-4)²=0
c) (2x/5-3/4)²-3x/5-1/4=0
d) 1/16(x-2)²=9/25(5/3x-5)²
4(2x+7)2-9(x+3)2 = 0
Giải phương trình tích
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
Giải phương trình
a. x (x+1)(x-1)(x+2)=24
b.(x-4)(x-5)(x-6)(x-7)=1680
c. (x+2)(x+3)(x-5)(x-6)=180
d.2x(8x-1)2(4x-1)=9
e. (12x+7)2(3x+2)(2x+1)=3
g. (2x+1)(x+1)2(2x+3)=18
Giúp với mn ơi ;-;a) 9(2x+1)^2-4(x+1)^2=0b) (x+1)^2+2(x+1)+1=0c) (x-1)(x^2-9)+x+3=0d) (7-x)^2__________ -(x+5)^2=0 4e) 4x^2+(x-1)^2-(2x+1)^2=0f) x^3+1=(x+1)(2-x)
1) Giải các pt tích
a) \(2x^2+7x-9=0\)
b) \(x^2-4x+3=0\)
c) \(x^4+x^3+x+1=0\)
d) \(x^4-x^2+2x+2=0\)
Giải các phương trình sau:
a/(2x-1)2=49
b/ (2x+7)2=9(x+2)2
c/ 4(2x+7)2-9(x+3)2=0
d/ (5x-3)2-(4x-7)2=0
e/ (x+2)2=9(x2-4x+4)
f/ (5x2-2x+10)2=(3x2+10x-8)2
tìm x biết
\(9\left(x+2\right)-3\left(x+2\right)=0\)
\(x\left(x+5\right)+\left(x-3\right)\left(x+5\right)=0\)\(3x^2+6x=0\)
\(2\left(2x-5\right)-3x=0\)
\(\left(x-1\right)^2+x\left(5-x\right)=0\)
\(\left(2x-3\right)\left(2x+3\right)-\left(x+5\right)^2-3\left(x-1\right)\left(x+2\right)\)=0
\(\left(2x-1\right)^2-45=0\)
\(2x^2-6x=0\)
giúp vs can gap