Tim x, biet:
a)(x-3)^3-(x-3)(x^2+3x+9)+9(x-1)^2=15
b)(x^2-2)^2+4(x-1)^2-4(x^2-2)(x-1)=0
Giup minh voi!
tim x biet
a) 4(x+1)^2-9(x+2)^2=0
b) 4(x+1)^2+(2x-1)^2-8(x+1)(x-1)=11
giai cach lam giup minh nha
tim x biet:
a,x+x\(^2\)=0
b,x+1-(x+1)\(^2\)=0
c,15y(4y-9)-3(4y-9)=0
d,8(25z+7)-27z(25z+7)=0
tim x biet (x-2)^3 -(x-3)(x^2+3x+9)+6(x+1)^2
tim x biet (x^2+2x+1)(x+2)-x^2(x-3)-7x(x-1)=3x-9
tim x biet :
2 (x +5 ) - x^2 - 5x =0
TIM X , BIET ; 3x(x-2)-x+2=0 Lam nhanh ho minh nghe
tim x biet
(x-2)^2-(-x+1)=0
tim x, y , z biet x^2 - xy + y^2=0
