Mathematics, 26.07.2021 01:10 nauticatyson9

Cho f(x)=ax^2 +bx+0 . A) tính f(1) , f(3). B) biết 5a -b+2c=0.Chứng minh f(1),f(2) bé hơn hoặc bằng 0

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Cho f(x)=ax^2 +bx+0 . A) tính f(1) , f(3). B) biết 5a -b+2c=0.Chứng minh f(1),f(2) bé hơn hoặc bằng...

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