Toán Lớp 9: Tính các pt bậc hai sau :
a. 5t-0.125t^2=62
b. 5t-0.1t^2=62.5
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Toán Lớp 9: Tính các pt bậc hai sau :
a. 5t-0.125t^2=62
b. 5t-0.1t^2=62.5
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