1){х^2+у^2=25,
{ху=12.
2){
{
3)
4)x=-3
x=3
x=-4
x=4
5)-3y=12
3y=12
-4y=12
4y=12
6)y=-4
y=4
y=-3
y=3
7)(x1,y1)=(-3,-4)
(x2,y2)=(3,4)
(x3,y3)=(-4,-3)
(x4,y4)=(4,3)
8){(-3)^2+(-4)^2=25
{-3*(-4)=12
{3^2+4^2=25
{3*4=12
{(-4)^2+(-3)^2=25
{-4*(-3)=12
{4^2+3^2=25
{4*3=12
8) {25=25
{12=12
{25=25
9)(x1,y1)=(-3,-4)
Объяснение:
1){х^2+у^2=25,
{ху=12.
2){
{
3)
4)x=-3
x=3
x=-4
x=4
5)-3y=12
3y=12
-4y=12
4y=12
6)y=-4
y=4
y=-3
y=3
7)(x1,y1)=(-3,-4)
(x2,y2)=(3,4)
(x3,y3)=(-4,-3)
(x4,y4)=(4,3)
8){(-3)^2+(-4)^2=25
{-3*(-4)=12
{3^2+4^2=25
{3*4=12
{(-4)^2+(-3)^2=25
{-4*(-3)=12
{4^2+3^2=25
{4*3=12
8) {25=25
{12=12
{25=25
{12=12
{25=25
{12=12
{25=25
{12=12
9)(x1,y1)=(-3,-4)
(x2,y2)=(3,4)
(x3,y3)=(-4,-3)
(x4,y4)=(4,3)
Объяснение: