\(\left(x-1\right)^2-x\left(x+2\right)=13\\ \Rightarrow x^2-2x+1-x^2-2x=13\\ \Rightarrow-4x+1=13\\ \Rightarrow-4x=13-1\\ \Rightarrow-4x=12\\ \Rightarrow x=12:\left(-4\right)\\ \Rightarrow x=-3\)
Tìm x,biết:
a)(5-x).(x-1)=-2x.(x-1)
b)(x+3)2-(x-13).(x+13)=0
tìm x:
(x-2)^2+(1-x)(1+x)=13
giai pt 2(x^2+x+1)^2-7(x-1)^2=13(x^3-1)
Tìm x
a. 3.(x-2)+2.(x-3)=13
b. (x+1).(2-x)-(3x+5).(x+2)=-4x2+1
c.x.(5-2x)+2x.(x-1)=13
d. (2x+3)2-(x-1)2=0
e. x2.(3x-2)-8+12=0
f x2+x=0
g. x3-5x=0
13-(3.x^2+5x-8).(2x-1)=(-2.x^2-3.x+1).(x+3/8).6.x
tìm x thỏa mãn: (x+1)(x-2)^2+x^2(4-x)=13
tìm x , biết : x(x-2)+(1-x)(1+x)=13
\((x-1)^2+|x+21|-x^2-13=0\)
Tìm tap hop x thoa man (x+1)(x-2)^2+x^2(4-x)=13
Tìm x biết (x+1).(x-2)^2 + x^2.(4-x) = 13. Tập hợp x thỏa mãn là .........
