Các câu hỏi tương tự
2can(2x+3y)+can(5-xy)=7
va 3can(5-x-y)-can(2x+y-3=1
BAI 1 TINH GIA TRI CUA BTHUC
A=3PHAN 1+CAN 3 -2PHAN 1-CAN 3
B=CAN 10-CAN 5 PHAN CAN 2-1 -3CAN 5 +5PHAN CAN 5+3 +2 PHAN CAN 2
BAI 2 GIAI PT
a)CAN 49-28X+4X MU 2 -5=0
b)1PHAN 2 CAN X-2 -4 CAN 4X -8 PHAN 9 +CAN 9X+18 -5=0
MOI NGUOI GIUP MINH VS MINH CAN LUON BAY GIO
CAM ON
phan tich ;can (x+10x+21)=3can(x+3) + 2can(x+7)-6
tim x de 3can x tren can x cong 1
can bac hai cua 2x^2-4x+5=x-4
cho ba so thuc khong am x,y,z thoa man x+y+z=3 Tinh GTNN cua A=can(2x^2+3xy+2y^2)+can(2y^2+3yz+2z^2)+can(2z^2+3zx+2x^2)
giai phuong trinh x4+4x3+5x2+2x-10=can (x2+2x+5)
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Giai cac phuong trinh sau
a)x^2- 10=0
b)2x^2- 6=0
c)x^2- can bac 5=0
Giai he phuong trinh
x(x+y)+can (x+y)=can (2y) [can(2y^3)+1]
8x^2-8y+2(x^3-y^3)+3=8y can(2x^3-3x+1)
tat ca deu la can bac hai