May 2021 1 280 Report
giup minh may bai toan 9 !!!!!!!!!!!!!!!!?

B1: tim tat ca cac so nguyen a de phuong trinh: x^2-(3+2a)x+40-a=0

B2: tim tat ca cac so tu nhien a de phuong trinh: x^2-a^2x+1+a=0

B3: tim cac so nguyen x,y thoa man: x^2-6xy+13y^2=100

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