Các câu hỏi tương tự
Tim tat ca cac cap so nguyen(x,y) thoa man:
10x + y = x2 + y2 +1
a)Tim tat ca cac so nguyen duong x, y , z thoa man: \(\frac{x+y\sqrt{2013}}{y+z\sqrt{2013}}\)la so huu ti, dong thoi x2 + y2+ z2 la so nguyen to.
b) Tim so tu nhien x, y thoa man: x(1+x+x2) = y(y-1).
giup minh vs......
1.Tim tat ca cac so nguyen n ( lnl <1000) sao cho can(3n^2 +789) la mot scphuong chia het cho 3.
2. Biet rang x la mot so thuc khac 0, tim gtnn cua bieu thuc: Q = ( 2011,2012x^2 -2x +2013,2014)/(2014,2015x^2)
Xin giai giup toi giai bai toan sao day, xin cam on nhieu Tim gia tri nho nhat. M= /x-1/ + /y-1/ + /z-1/ Biet /x/ + /y/ + /z/ =5
Cho x,y,z la cac so thuc duong thoa man xyz=2
Chung minh rang:\(\frac{x}{2x^2+y^2+5}+\frac{2y}{6y^2+z^2+6}+\frac{4z}{3z^2+4x^2+16}\le\frac{1}{2}\)
CHO MINH HOI VS
x^2 - 2x -3m^2 = 0 voi m la tham so
1) giai phuong trinh khi m=1
2) tim tat ca gia tri cua m de phuong trinh co 2no x1,x2 khac 0 thoa dieu kien x1/x2 - x2/x1 = 8/3
tim 2 so nguyen to x,y biet x2-6y2=1
Len men a(g) glucozo voi hieu suat 80%. Cho toan bo luong khi CO2 sinh ra hap thu het vao dung dich CA(OH)2 thu duoc 10g ket tua. Khoi luong dung dich sau phan ung giam 3,4g so voi ban dau. Tim a.
LAM ON GIAI NHANH GIUP MINH BAI NAY VOI!!!!! CAN GAP NHE!!!! CAM ON NHIEU!!!!
Tim cac so x, y la cac so nguyen thoa man: \(\frac{2}{x+y\sqrt{5}}-\frac{3}{x-y\sqrt{5}}=-9-20\sqrt{5}\)