День: 21 февраля 2026

ա) (4a + 9)² = t

t2 + 3t + 8 = 0

D = 9 -32 = -23 = ∅

բ)(x + 1)² = t

-2t2 — 7t + 15 = 0

D = 13

t1 = -5

t2 = 1.5

ա) x = -2, x = 1

3(x — 1) — (x + 2)/(x+ 2) x (x — 1) = 0

2x — 5/(x + 2) (x -1) = 0

x = 2.5

գ) x — 1 + x + 1/(x + 1) (x — 1) = o

2x + 0 = 0

x = 0