Предмет: Геометрия, автор: Koto88

знайдіть координати точок перетину прямої y=3x+2 і параболи y=3x в квадраті + 6х-4

Ответы

Автор ответа: kirichekov
4
y=3x+2
y=3x²+6x-4
3x²+6x-4=3x+2
3x²+3x-6=0
x²+x-2=0
x₁=-2,  x₂=1
y(-2)=3*(-2)+2, y=-4    A(-2;-4)
y(1)=3*1+2, y=5          B(1;5)
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