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da thuccho da thuc p(x)=x^3 +ax^2 +bx+c.A) Tim a,b,c khi x=1,2 ;2,5; 3,7 thi p(x)=194,728 ;2060,625 ;2173,651653B) Tim x khi p(x)=1989
help me!!!cho da thuc p(x)=x^3 +ax^2 +bx+c.A) Tim a,b,c khi x=1,2 ;2,5; 3,7 thi p(x)=194,728 ;2060,625 ;2173,651653B) Tim x khi p(x)=1989
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