8-sinf kursini takrorlash
Javoblar ota-onalar va o‘qituvchilar uchun.
1
y = kx + b grafigi (0; −1) va (3; 5) nuqtalardan o‘tsa, k va b ni toping.
k = 2, b = −1
2
x² + 3x − 10 = 0 tenglamani yeching.
x₁ = 2, x₂ = −5
3
2x + y = 8, x − y = 1 sistemani yeching.
(3; 2)
4
|2x − 1| ≤ 5 tengsizlikni yeching.
−2 ≤ x ≤ 3
5
x⁴ − 10x² + 9 = 0 bikvadrat tenglamani yeching.
x = ±1, x = ±3