vì bảo tồn

đất phùấ

biểu đồ cột

a)3x.(x-1)+(x-1)=0 (x+1).(3x+1)=0 =>x+1=0 hoặc 3x+1=0 =>x=1 x=-1/3 vậy x={1,-1/3) b)x.(x-9)=0 =>x=0 hoặc x=1 vậy x={0,1}

a)(x-5)^2 b)(-8y+x).(64y^2-8xy+x^2

a)(2x)^2+2.2x.1+1^2 =4x^2+4x+1 b)a^3-3.a^2.b/2+3.a.(b/2)^2-(b/2)^3 =a^3-3a^2b/2+3a(b/2)^2-(b/2)^3

1.Muong earns living by farm and raise animals 2.They is habit in their exercise after work

1.If you don't drink more water,you won't get more acne 2.My sister wants to see the terrraced fields, so she is going Sa Pa 3.he will complete his work,unless he spend time on his phone