Ko‘rsatkichli tenglamalar
Javoblar ota-onalar va o‘qituvchilar uchun.
1
5^(2x−1) = 125 ni yeching.
2
2
(1/3)^(x−2) = 9 ni yeching.
3^(2−x) = 3² ⇒ 2 − x = 2 ⇒ x = 0.
3
3^(x+2) + 3ˣ = 270 ni yeching.
3ˣ · (9 + 1) = 270 ⇒ 3ˣ = 27 ⇒ x = 3.
4
25ˣ − 6 · 5ˣ + 5 = 0 ni yeching.
t = 5ˣ: t² − 6t + 5 = 0, t = 1 yoki 5 ⇒ x = 0 yoki x = 1.
5
3ˣ · 3ʸ = 81, x − y = 2 sistemani yeching.
x + y = 4 va x − y = 2 ⇒ x = 3, y = 1.