Предмет: Алгебра, автор: bum06

Определите координаты вершин параболы :
А)у=-х^2+5
Б)у=х^2+2х
В)у=-3х^2+12х-2

Ответы

Автор ответа: mikael2
0
x0= -b/2a

x²+5   b=0   x0=0  y0=0+5=5

x²+2x   x0= -2/2= -1    y0=1-2 = -1

3x²+12x-2     x0=- 12/6 = -2      y0=3*4-12*2-2=12-24-2= -14
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