\(\left(2x-3\right)^2-x^2+10x-25=0\)
\(\left(2x-3\right)^2-\left(x-5\right)^2=0\)
\(\left(2x-3+x-5\right)\left(2x-3-x+5\right)=0\)
\(\left(3x-8\right)\left(x+2\right)=0\)
\(\Rightarrow3x-8=0\)hoặc \(x+2=0\)
=> \(x=\frac{8}{3}\) hoặc \(x=-2\)
tim x
x^2-5x-4(x-5)=0
2x(x+6)=7x+42
x^3-5x^2+x-5=0
x^4-2x^3+10x^2-20x=0
(2x-3)-x^2+10x-25=0
Tìm x:
a) 18x^3-8x/25=0
b)x^3+2x^2-4x-8=0
c)x^2+10x+21=0
Tìm x:
1) ( 4x3 + 3x3) : x3+ ( 15x2 + 6x) : ( -3x) = 0
2) ( 25x2 - 10x) : 5x + 3 ( x - 2 ) = 4
3) ( 3x + 1 )2 - ( 2x + 1/2 ) 2 = 00
4) x2 + 8x + 16 = 0
5) 25 - 10x + x2 = 0
Tìm x:
1,2x^3-50x=0
2, 5x^2-4(x^2-2x+1)-5=0
3, 6x(x-2)=x-2
4, 7(x-2020)^2-x+2020=0
5,x^2-10x=-25
6, x^2-2x-3=0
Tìm x:
a) 5x(x-2)+(2-x)=0
b) x(2x-5)-10x+25=0
c) \(\dfrac{25}{16}\)-4x2+4x-1=0
d)x4+2x2-8=0
Bài 1: tìm x
1, 2x(3x-1)+1-3x=0
2, x\(^2\)(2x-3)+12-8x=0
3, 25(x-1)\(^2\)-4=0
4, 25x\(^2\)-10x+1=0
5, -4x\(^2\)+\(\dfrac{1}{9}\)=0
6, (x-1)\(^3\)=8
7, (2x-1)\(^3\)+27=0
8, 125+\(\dfrac{1}{8}\)(x-1)\(^3\)=0
Tìm x,y biết:
a,2x^2+y^2+2xy+10x+25=0
b,x^2+3y^2+2xy-2y+1=0
c,x^2+2y^2+2xy-2x+2=0
Tìm x,y biết:
2x^2+y^2-2xy+25+10x=0
tìm x: a)x^4-2x^3+5x^2-10x=0
b)(3x+5)^2=(2x-2)^2
. c)x^3–2x^2+x=0
. d)x^2(x-1)-4x^2+8x-4=0
