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Patriceyay01
a fost răspuns

(2x + 3) ² - 3x(1 - x) + 2(x+3)(x-3) - (3x - 2)²

Răspuns :

Loreloredana74
4x²+12x+9-3x+3x²+2x²-18-(9x²-12x+4)=9x²+9x-9-9x²+12x-4=21x-5
Pomelo1
4x²+12x+9-3x+3x²+2x²-18-9x²+12x+4=
21x-5