Các câu hỏi tương tự
tim x biet 1/x+1/x+2 + 1/x+5 +1/x+7= 1/x+1 +1/x+3 +1/x+4 +1/x+6
tim x biet 1/x+1/x+2 + 1/x+5 +1/x+7= 1/x+1 +1/x+3 +1/x+4 +1/x+6
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
(2x=1)^2 - 4(x=2)^2=9
3(x-1)^2 -3x(x-5)=1
3(x+2)^2+ (2x-1)^2 =7
7(x+3)(x-3)=36
tim x biet x-y=xy-1
cm x^3 -x^2 -2x^2 +2x chia het cho 6
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 m biet
a) (x^2-x+1)x-(x+1)x^2+m= -2x^2+x+5
b) -x^2(x^2+x+1+2)= -x^4-x^3-x^2+m
giup vs nhanh mk dag can gap
(tim x biet (x+1)(2-x)-(3x+5)(x+2)=-4x^2+1