Question

E(x)=(x-1)^2-(x-2)^2+(1-x)^2-(2-x)^2
Arata ca E(x)=4x-6
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Answer 1

Răspuns:

Explicație pas cu pas:

E(x)= 2(x-1)^2 - 2(x-2)^2

E(x)= 2(x^2-2x+1) - 2(x^2-4x+4)

E(x)= 2(x^2-2x+1-x^2+4x-4)

E(x)= 2(2x-3)

E(x)= 4x-6