tìm x:
(x-15)+(x-14)+(x-13)+....+(x-1)+19+20=0
hiai nhanh ho minh voi ,minh can rat gap
giai ro ra nhe,ai giup minh tich cho
(x+1) + (x+2) +....+(x+20) giai nhanh nhak minh gap lam
Tim x biet :
x\- 2 = - 18\ 26
Giup minh voi minh dang can rat gap
Tim x biet :
3\ x - 5 = - 4\ x + 2
Giup minh nhe minh dang can rat gap
giai cho minh bai toan nay minh dang can gap
x*y=-2
cam on rat nhieu
Bai 8 : ****
Chung minh rang :neu 4 x abc + deg chia het cho 83 thi abc x deg chia het cho 83
Ai giai dc mk tang cho 2 like mk dang can rat gap mong cac bn giup do !
Tim x,y,z biet : ( x - 1/3 ) x ( y - 1/5 ) x ( z + 1/4 ) = 0 va x+y = y - 1 = z+1
giai giup minh nhe minh rat can den day
Tim x :
72 - 3x = 5x + 8
Giup minh nhe minh dang can rat gap .
b1:tim x:(x-3)2+(y+5)4=0
b2:tìm a,b,c thuộc z biet:
ab=6,bc=12,ac=8
giai ro ho minh nhe,minh can rat gap ,mai phai nop roi
