x3-x2=0
x2(x-1)=0
Suy ra
x2=0 su ra x=0
x-1=0 suy ra x=1
3-x2 =0
3-x=0:2
3-x = 0
x= 3-0
x = 3
giup minh tra loi cau nay nha
x/2+x/3+x/4-0.6=-1va1/2
Giup mink cau nay nha
1,chung minh dang thuc
-(-a+b+c)+(b-c-1)=(b-c+6)-(7-a+b)+c
2,Tim x thuoc Z
(x+1)+(x+3)+(x+5)+.....+(x+99)=0
(x-3)+(x-2)+(x-1)+...+10+11=0
giup minh 2 cau nay nhe
a 3.(x+5)-8=x+17
b/ 5(x+3)-10=2x-19
giup minh nhe minh bay gio can gap lam mai minh phai nop roi
cac ban giup mk cau nay nhe x ngũ 2 -5x+4=0
co ai giup minh voi khong ,giup minh tra loi hai cau hoi nay voi !
Viet tich sau duoi dang mot luy thua :x . x2 .x3 .x4 .x5....x49 .x50 .x51 .x52
Tim cac so tu nhien x,y sao cho:(x+1) (y-2) =2
moi nguoi oi giup minh di chu !
co ban nao giup minh cau nay ko ?????
-13 . | x | = -26
giup minh voi !!!!!
help me !!!!!
cac ban giup toi cau nay voi:
Thuc hien phep tinh(hop ly neu co the):
(10/99+11/199-12/299)x(1/2-1/3+-1/6)
mong cac ban giup minh nhanh voi a. Minh xin cam on
MN GIUP MINH VOI DAG CAN GAP
tim x
[(6x-39)chia 7 ]
x=?
cam on ban nao da giup minh giai cau nay
cau 1. Chung minh rang C=2+2^2+2^3+....+2^99+2^100 chia het cho 31
b, Tinh tong C
c,Tim x de 2^2x-1-2=C
CAC BAN GIUP MINH BAIF NAY VOI