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Stefaniaoprea
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Se da E(x) = (x+1)^2 + (x-1)^2 - (x-2)(x+2). Calculati E(1) + E(√2)

Răspuns :

Moisescuraluca
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Vezi imaginea Moisescuraluca
Andreeapba
E(x)=(x+1)²+(x-1)²-(x-2)(x+2)
E(1)  E(√2)
(x+1)²+(x-1)²-(x-2)(x+2)=x²+2x+1+x²-2x+1-x²-2x+2x+4=x²+6
E(1)=1²+6=7
E(√2)=(√2)²+6=2+6=8

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