Answer to Question #307955 in Calculus for Niu_bi

Question #307955

F(x) = 5x²-8x + 10

Expert's answer

"D=b^2-4ac=64-4*50" <0

"\\forall x\\in\\R" F(x)>0

F'(x)=10x-8

F'(x)=0;x=0.8

min(F(x))=F(0.8)="\\frac{34}{5}"

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