Himpunan penyelesaian sistem persamaan x+y=7 dan xkuadrat2+ykuadrat2=25?

By Admin ReiPosted on October 28, 2022

Himpunan penyelesaian sistem persamaan x+y=7 dan xkuadrat2+ykuadrat2=25?

$y = 7 - x$
$x^2 + (7-x)^2 = 25$
$x^2 + 49 -14x + x^2 = 25$
$2x^2 - 14x + 24 = 0$
$x^2 - 7x + 12 = 0$
$x_1 = 4$ $y_1 = 3$
$x_2 = 3$ $y_2 = 4$
HP = (4,3) ; (3,4)