2 x 2 + 5x – 3 = 0
2 x 2 + 6x – x – 3 = 0
2x(x + 3) − (x + 3) = 0
(x + 3) (2x − 1) = 0
x + 3 = 0 hoặc 2x − 1= 0
•x + 3 = 0 ⇒ x = −3
•2x – 1 = 0 ⇒ x = 1/2
Vậy x = −3 hoặc x = 1/2
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
Tìm x biết: a)x(x-3)+x-3=0 b)(5x-4)^2-16^2=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, biết:
a) x(x - 2) + x - 2 = 0;
b) 5x(x - 3) - x + 3 = 0
Tìm x biết :
a) 2(x + 5) - x^2 - 5x = 0
b) x^3 - 5x^2- 4x + 20 = 0
c) (2x - 1)^2 - (x + 3)^2 = 0
Tìm x biết :
a) 2(x + 5) - x^2 - 5x = 0
b) x^3 - 5x^2- 4x + 20 = 0
c) (2x - 1)^2 - (x + 3)^2
Tìm x, biết : a.,(x-y)^2-(x-3).(x+3)=6; b, x^2-5x=0;c,x^2+6x+5=0
Tìm x biết:
a) x\(^2\) + 5x = 0
b) 3x(x – 1) = 1 – x
c) 2x(x + 2) – 3(x + 2) = 0
Tìm x,biết
A) x(x-2)+x-2=0
B) 5x(x-3)-x+3=0
tìm x biết 25(x+3)^2+(1-5x)(1+5x)=0
