October 2021 0 9 Report
ПОМОГИТЕ ПОЖАЛУЙСТА. КВАДРАТНЫЕ УРАВНЕНИЯ. 8 КЛАСС. АЛГЕБРА. Решите уравнение:
x(в квадрате)+18+9x=0
формула: D=b(в квадрате)-4×a×c
x1; 2=-b+-(корень из D)÷2×a
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