\(x\left(x-2\right).3+5\left(x-2\right)=0\)
\(\Rightarrow\left(x-2\right)\left(3x+5\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x=2\\x=-\dfrac{5}{3}\end{matrix}\right.\)
Bài 5: Tìm x (Giải phương trinh)
a)x^3-13x=0
b) 5x(x – 2000) – x + 2000 = 0
c) 2x(x – 2) + 3(x – 2) = 0
d) x + 1 = (x + 1)2
e) x + 5x2 = 0
f) x3 + x = 0
Bài 5: Tìm x (Giải phương trình)
a)x^3-13x=0 b) 5x(x – 2000) – x + 2000 = 0
c) 2x(x – 2) + 3(x – 2) = 0 d) x + 5x2 = 0
d) x + 1 = (x + 1)2 e) x3 + x = 0
Tìm x,biết
1) 3x^2 - 4x = 0
2) (x^2 - 5x) + x - 5 = 0
3) x^2 - 5x + 6 = 0
4) 5x(x-3) - x+3 = 0
5) x^2 - 2x + 5 = 0
6) x^2 + x -6 = 0
Bài 2: Tìm x, biết: a) (x + 2)^2 – 2(x + 2)(x – 5) = 0. b) 2x^2 + 3x – 5 = 0. c) x + 2 ^2 x 2 + 2x^3 = 0. d) (3x-1)^2-4(x+5)^2=0
Tìm x:
1, x(x-20)+x-2=0
2, 5x(x-3)-x+3=0
3, 3x(x-5)-(x-1)(2+3x)=30
4, (x+2)(x+3)-(x-2)(x+5)=0
Tìm x, biết :
a/ \(\dfrac{1}{3}x\left(x^2-4\right)=0\)
b/ \(x\left(x+5\right)=x+5\)
c/ \(x^3-\dfrac{1}{9}x=0\)
3)\(^2-\left(x+5\right)^2=0\)
e/ \(\left(x+2\right)^2-\left(x-2\right)\left(x+2\right)=0\)
f/ \(x\left(2x-3\right)-6+4x=0\)
g/ \(2\left(3x-2\right)^2-9x^2+4=0\)
h/ \(x^2\left(x+1\right)+2x\left(x+1\right)=0\)
i/ \(4x^2+9x+5=0\)
tìm x
3, ( x - 2 ) mũ 2 - 5( 2 - x ) = 0
4, ( x mũ 3 - 8 ) + 2x mũ 2 - 4x = 0
5, x mũ 2 ( x - 3 ) + 18 - 6x = 0
b2 tìm x
a)x^2-4x-5=0
b)5x^2-9x-2=0
c)(x^2+1)-5(x^2+1)+6=0
d)(x^2+6x)-2(x+3)^2-17=0
tìm x biết : a)x(x-3)-x^2+5=0 b)x^2-6x=0 c)2x^3+5x^2-012x=0
Tìm x
1) (2x-1)(x+3)(2-x)=0
2)x^3 + x^2 + x + 1 = 0
3) 2x(x-3)+5(x-3) =0
4)x(2x-7)-(4x-14)=0
5) 2x^3 + 3x^2 + 2x + 3 = 0
