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Nikitaverteyko2
a fost răspuns

Se considera expresia E(x)=4(x-3)(x+3)-(2x-3)²+(x-5)²+21 ​

Se Considera Expresia Ex4x3x32x3x521 class=

Răspuns :

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E(x)=x²+2x+1

a=1,b=2

x=-2/2×1

x=-1

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