cuc kho ma cung cuc de

C

conan99

Ta có y=f(x)=9.x-1+x^2
Khi f(1)=9.1-1+1^2=9
Ta có: p=g(x)=-5-8.x+25x^2
Khi g(2)=-5-8.2+25.x^2=79
Ta có f(1)+g(2)=9+79=88
 
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