\(\left(x-3\right)^3+3-x=0\)
\(\Rightarrow\left(x-3\right)^3-\left(x-3\right)=0\)
\(\Rightarrow\left(x-3\right)\left[\left(x-3\right)^2-1\right]=0\)
\(\Rightarrow\left(x-3\right)\left(x-4\right)\left(x-2\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x=2\\x=3\\x=4\end{matrix}\right.\)
2/3(x22-4)=0
(x+5)2-(x+2)(x-3)=-1
x22-4+(xx-2)2=0.
2x2-6x=0
2x(x+2)-3(x+2)=0
(x+3)(x-3)+x(5-x)=-14
x(x-3)-x22+5=0
2x33+5x2-12x=0
x2-5x-24=0
x2-x-6=0
x22-6x+8=0
x3-16x=0
Bài 3
1.(x-1)(x+2)+5x-5=0
2.(3x+5)(x-3)-6x-10=0
3.(x-2)(2x+3)-7x2+14x=0
4.(x+1)(x-3)-15+5x=0
5.5(2x-1)(x+3)+5x-10x2=0
Bài4
1.3x-6+(x+1)(x-2)=0
2.4x2+6x-(2x+3)(3x-x)=0
3.5x-10-(2-x)(4+x)=0
4.10-10x+(x-1)(x-3)=0
5.20x2+30x-2(x-5)(2x+3)=0
Đề: Tìm x
a)2x.(3x+5)-x.(6x-1)=33 k)5(x+3)-2x(x+3)=0
b)x(3x-1)+12x-4=0 i)5x(x-2)-(2-x)=0
c)5x(2x+1)-12x-6=0 m)x(x-1)-2(1-x)=0
d)x3-5x2+4x-20=0
e)2x3-5x2+2x-5=0
g)(x-2)3-x(x+1).(x-1)+62=5
1) x2 – 2x + 1 = 0
2) x ( x – 3 ) – z +3 = 0
3) x2 + 36 = 12x
4) 4x2 – 49 = 0
5) x ( x – 1 ) – 2 ( 1- x ) = 0
6) ( x – 3 ) 2 + 3 – z = 0
7) x3 = x5
Help meeeee!!!!
Tìm x biết:
a)(x+3)^2+(x-2)(x+2)-2(x+1)=7
b)x(2x-1)-(x-2)(2x+3)=0
c)(x-1)(x+2)-x-2=0
d)x[(3x+2)+(x+1)^2-(2x-5)(2x+5)]=0
đ) 2x^2-7x+5=0
e) (2x+3)(x-5)=(2x+1)(2×+3)
bài 2 tìm x
1) x^3+2x^2+2x+4=0
2) x^3+4x^2-2x-8=0
3)x^3+3x-4=0
4)x^3+x-30=0
help
Tìm x biết
a, x (x - 2) + x - 2 = 0
b, 5x (x - 3) - x + 3 = 0
c, x (x - 2) + 5 (2 - x) = 0
Tìm x :
a) (x+2)^2-(x-2)(x+2)=0
b) (2x+3)^2-(x-1)^2=0
c) x^3-8=(x-2)^2
d) x^3+5x^2-4x-20=0
e) x^3-4x^2+4x=0
f) x^2-25+2(x+5)=0
g) 2(x^2+8x+16)-x^2+4=0
h) x^2(x-2)+7x=14
Mai nộp rồi giúp mình với các bạn
bài 3 tìm x
a)(2x+3)^2-(2x+1)(2x-1)=32
b)(4x+3)(4x-3)-(4x-5)^2=46
c)(x+4)^2+(x+3)(x-3)-5(x+1)(x-1)=16
d)92x-1)^2+(x+3^2-5(x+7)(x-7)=0
e)25x^2-9=0
