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Efectoati Calculele x²-4supra x²+3x+2•x²+xsupra x²-4x+4

Răspuns :

x²- 4/x²+3x+2x²+x/x² -4x+4= (numitor comun x²)
=(x^4-4+3x³+2x^4+x-4x³+4x²)/x²=
=(3x^4-x³+4x²+x-4)/x²