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AndreeInna
a fost răspuns

1. Descompuneti : a) x²-12x+36 b) x³-81x
2. Calculati : a) 4x²=9
b) (x-1)²-(x-2)(x+2)+2(x+2)(x-3) ∈ R
c) a= (√7+√2)²-√2(√7+√2)-√7(√2-2√7)