Các câu hỏi tương tự
tim x nguyen biet:
a 8.(x mu 2 +3).(5-x)
b)(2x + 1)mu 2=25
c) (1-3x)mu3 =64
d)(4-x)mu3 =-27
e) xmu2 -5x =0
tim ba so a;b;c biet:a+b-c=-3;a-b+c=11;a-b-c=-1
tim a,b thuoc N* biet:a+b=224,UCLN(a,b)=56
ai nhanh mk tick
tim a va b biet:a<b
và a+b=42
bcnn {a,b} la 72
tim so tu nhien a,b,c,d nho nhat biet:a/b=15/21;b/c=9/12;c/d=9/11
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 ;(
tim a,b nguyen khac 0 thoa man a + b =ab
tim so nguyen x biet:a,(x2+8).(x2-9) = 0 b, (x2-5).(x2-25)<0 c,(x-3).(x+7)<0
tim x biet:a.2x^2-1=17/8;b.(2x-0,05)(x+3)>0;c.(7-x)(x+19)>0