Ratsional, irratsional tenglamalar va ikkinchi darajali sistemalar
Avval o‘zingiz yeching, keyin javobni tekshiring.
1
(x^2 − 25)/(x + 5) = 0 ni yeching.
x = 5 yoki x = −5; x = −5 maxrajni nolga aylantiradi. Javob x = 5
2
sqrt(x + 2) = x ni yeching.
x^2 − x − 2 = 0, x = 2 yoki −1. x = −1 begona. Javob 2
3
x + y = 6, xy = 8 sistemani yeching.
(2; 4) va (4; 2)
4
15/(x + 2) = x ni yeching.
x^2 + 2x − 15 = 0, x = 3 yoki x = −5
5
x^2 + y^2 = 25, x + y = 7 sistemani yeching.
xy = (49 − 25) / 2 = 12. (3; 4) va (4; 3)