Các câu hỏi tương tự
tim x a)2+4+6+..........+2x=210
b)(2-x)^6=(2-x)^8
c)x+(x+1)+(x+2)+..........(x+2010)=2029099
tim x biết
a)2|x-6|+7x-2=|x-6|+7x
b)|x-3|=2x+6
c)|x+1|+|x+2|+|x+3|+..+|x+2018|=3027x
a, tim x; 2*(x-1)6=128
b,x2=x
tim x biet :
a) 1/3 + 1/6 +1/10+ ...+ 2/ x*(x+1)
b) 1/2 + 1/6 +1/12 + ...+1/x=72/73
tim x
a)0,25x - 2/3x = -1 1/6
b)3/4 + 1/4.x +x - 7/6 .x = 5/12
Bài 1 tim x
a) (3.x-15 mũ 7) = 0
b) 4^2-x-6 +1
c)(3 - x ) ^ 10 x . ( 3-x ) ^20 = 1 ( x+ 3)
d) ( x - 6 mũ 3 ) = ( x - 61 mũ 2)
tim x thuoc Z biet
a,x^2+3x-13 chia het x+3
b,x^2 +3 chia het x-1
c,x-6 chia het x^2-1
cau 1.tim x
a)15-|x-4|=6
b)-30+|25-x|=-1
c)x-(12-25)=-8
d) (x-29)-(17-38)=-9
cau 2.tim so nguyen x
a,22-(-x)=12
b,(x+5)+(x-9)=x+2
c,(27-x)+(15+x)=x-24
1.Tìm x thuoc N de
x^2+2x-5 chia het cho x
2.tim x thuoc N de
x^2+x=132
3.tim x,y de
x^2+xy=5
4.tim a thuoc N de
a)a+10 chia het cho a-1
b)3a-6 chia hết cho 3a
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