Test I variant Amallarni bajaring: a 61; b 60; c 61; d 62

A) (3;4); B) (-3;-4); C) (-3;4); D) (3;-4).

y=x2 (4x+6 parabola qaysi choraklarda joylashgan:

A) I, IV; B) II, III; C) I, II, III, IV; D) I, II.

Ikki musbat sonning yigindisi a ga teng. Agar shu sonlarning kvadratlari yigindisi eng kichik bolsa, shu sonlarni toping:

A) B) a3, a; C) D)

Tengsizlikni yeching: 2x2 (8(0.

A) 0(x(4; B) -2(x(2; C) x(-2; D) x(-2.

Tengsizlikni yeching: -x2+3x(0.

A) x(0, x(3; B) x>3; C) x(0; D) 0

Tengsizlikni yeching: (x+3)(x(4)>0

A) x>4; B) x<(3; C) 04.

Tengsizlikni yeching: (4x2+8x(3>0

A) x> B) x<; C)

Tengsizlikning barcha butun yechimlari yigindisini toping: x2+6x+5<0

A) 10; B) 9; C) (9; D) (10.

Rombning perimetri 68 sm, diagonallaridan biri 30 sm. Rombning yuzini toping.