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Philongphida
giai pt bac 2-2

giai phuong trinh trung phuong

bai 10 (a^2+b^2 la so chinh phuong )a,b#0

bai toan ga,cho

tim uoc chung lon nhat cua 2 so

tim tong cac chu so va so cac chu so

xet tinh doi xung cua so m

giai pt bac 2

bai 10 (a^2+b^2 la so chinh phuong )a,b=0

tim cac so co gia tri bag tong lap phuong cac chu so cua no