Tuyển Cộng tác viên Hoc24 nhiệm kì 26 tại đây: https://forms.gle/dK3zGK3LHFrgvTkJ6
tim cac tu nhien a va b sao cho 2 mu a + 2 mu b = 2 mu a+b
tim cac tu nhien a va b sao cho 2 mu a + 2 mu b = 2 mu a+b
tim cac gia tri cua x de bieu thuc sau nhan gia tri am
a)x mu 2 + 5x b)x mu 2 - 5/2x c)3(2x+3)(3x-5) d)x - 2/x-6 e) x mu 2 -1/x mu 2
Cho A ( x ) = 8-5x+3x2-15-3x+16
B ( X ) =5x-2x2=4x-1-x2-3x
a) thu gon A va B sap xep theo so mu giam dan
b) tim da thuc C biet C ( x) + A ( x)= B ( x)
Tim x,y la so nguyen
a) 2x-3y+5= xy
b) x mu 2 +2xy+2x+4y
B2 Tim x,y la so nguyen to
x mu 2 -2y mu 2 =1
B3 Tim so tu nhienx,y
7 .(x-2004) mu 2 = 23- y mu 2
tim x,y biet:36-y mu 2=8(x-2021) mu 2
[1/2x mu 2(2x-1) mu m-1/2 x mu(m +2]:1/2x mu 2 =0
tim x
chứng minh: A=2+2 mu 2 + 2 mu 3+ ... + 2 mũ 2016
a) chia hết cho 3, 6
b) chia hết cho 7
Cho tam giac ABC CMR neu ha=3,hb=4,hc=5 thi a mu 2 lon hon b mu 2 cong c mu 2
