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Laur135689
a fost răspuns

Calculati (2x+3)la2 - 3x(1-x) +2(x+3)(x-3) - (3x-2)la2 va rog ajutati-ma

Răspuns :

CosmoteRo
(2x+3) la 2=(2x+3)(2x+3)=4x la 2+6x+6x+9=4x la 2 +12x+9
2(x+3)(x-3)=2(x la 2-3x+3x-9)=2x la 2-18
(3x-2) la 2=(3x-2)(3x-2)=9x la 2-6x-6x+4=9x la 2-12x+4
4x la 2 +12x+9-3x+3x la2+2x la 2-18-9x la 2-12x+4=
-2x la 2-2x-5



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