Các câu hỏi tương tự
tim x y thuoc z biet x mu 2 cong y nhan x cong y mu 2 bang x mu hai nhan y mu hai
tim so tu nhien x biet
(2.x+1)mu 5 /(2.n+1)mu 2=1
2 mũ x+2 .2 mu x+........+10.2 mu x =10 . 11
dau / nay la dau chia
dau . nay la nhan do nhe!!!!
1) Tính:
a) A = 7 mu 2 phan 2 nhan 9 cong 7 mu 2 phan 9 nhan 16 cong 7 mu 2 phan 16 nhan 23 cong van van cong 7 mu 2 phan 65 nhan 72
tim x thuoc N:
a) 2 mu x =4 nhan 128
b)2 mu x nhan 3 mu x =4 nhan 9
tim x thuoc n biet : b,(149 nhan 35 : x + 5) nhan 17 =13 va d/(3 nhan x tru 3 ) binh phuong 3 =2 nhan 32 e/5 x+1-5x=500
tim x thuoc N biet 97.x la so nguyen to ( . la dau nhan)
bai 1;tim x biet ; a, 2 . (x-3)=5mu2-7 b, 23-2 mu 2 . ( x+4)=3 mu 3 -6 c, x . 2 mu 4 -3 mu 2 =7 mu 2 -(5 mu 2 -13)
bai 2 ; tinh hop li ;
a, 43.75 +43.25 b, 14.73+2.7 .37 -28.5 c, 34.56+44.17 .2+100.66
bai 5 ;tinh a,{92-[(4 mu 2 +71.2mu2);15]}-13
b, 360;{300;[150-5 mu 2 . (10 -2 mu3 )]}
<3 nhân x-72> nhân 372=13 nhân 69-39 nhan 23
tìm x biết 720:(x-17)=12 ; (-7)2.(-23+x)=(-49).(-23+13)