tim STP a,b biet:a,b*6-a,b=1a,b

ai lam truoc mkinh tick

Tim cac so nguyen x,y biet:a)*x2 -3*x+1 chia het cho x+2 b)x2-xy = 5x-4y-9 c) (x2-8)*(x2-15)<0 d) (x+1)2+(y+1)2+(x-y)2=2 e) (x2-4)x2>0 ai lam truoc minh tick,mai minh di hoc rui,lam giup minh di pls Thank ban truoc ne ;(

1)CMR:(a+b-c)+(a-b)-(a-b-c)=a+b

2)chung minh A va B la hai so doi nhau biet:A=a-b+c;B=-a+b-c

3)cho a-b=1.tinhS biet :

S=-(a-b-c)+(-c+b+a)-(a+b)

ai lam duov 5 tick luon

tim a,b thuoc N* biet:a+b=224,UCLN(a,b)=56

ai nhanh mk tick

trung binh cong cua 3 so la 4,5 . trung binh cong cua so thu nhat va so thu 2 la 4,15 . trung binh cong cua so thu 2 va so thu 3 la 4,9 . tim so thu nhat

AI LAM NHANH NHAT MINH TICK CHO

tim a va b biet:a<b

và a+b=42

bcnn {a,b} la 72

a, Chung minh rang 5m+3 va 3m+2 la 2 so nguyen biet rang 1 so bang 10 ngen to cung nhau voi m la so nguyen to bat ky.

b,Tim 1 bo ba so nguyen to biet rang 1 so bang 10 phan tram tong cua 3 so can tim

Ai lam nhanh nhat minh tick cho

Tim x biet:A. 2/3+x=-45%

B:x/5=5/6+-19/30.ai nhanh tay giai gium cho minh thi minh tick cho! 

Cho ab=3ab

a) Chung minh rang: \(b⋮a\)

b) Tim ab

Cac ban lam nhanh nha ban nao lam vua nhanh vua dung minh cho 2 tick luon.