Mathematics, 22.08.2021 15:40 nmillsap11
Cho phương trình x²-8x+m=0.Tìm các giá trị của m để phương trình có 2 nghiệm x1 x2 thoã trong các công thức sau
A x1²+x2²=50
B x1=7x2
C 2x1+3x2=26
D x1-x2=2
Answers: 2
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Cho phương trình x²-8x+m=0.Tìm các giá trị của m để phương trình có 2 nghiệm x1 x2 thoã trong các cô...
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