1. Լուծեք անհավասարումը.

ա) x² + 7x – 8 > 0

a = 1

b = 7

c = -8

D = 49 – 4 * 1 * (-8) = 45 * (-8) = 360

X₁ = 7 + 9/2 = 1

X₂ = 7 – 9/2 * 1 = -8

բ) 6x² – 10x – 16 < 0

a = 6²

b = -10

c = -16

D = 100 – 6² * 1 * (-16) = 64 * (-16) = 1024

X₁ = 10 + 7/2 = 17

X₂ = 10 – 7/2 * 1 = 3

գ) 2x² – 11x + 9 > 0

a = 2²

b = -11

c = 9

D = 121 – 2² * 1 * 9 = 117 * 9 = 1053

X₁ = 1/2 = 1

X₂ = -1/2 * 1 = -1

1. Լուծեք անհավասարումը.

ա) 7x² + 2x – 25 < 0

a = 7²

b = 2

c = -25

D = 4 + 2 * 1 * (-25) = 6 * (-25) = -150

X₁ = 2/2 = 1

X₂ = -2/2 * 1 = -2

բ) -3x² + 10x + 32 > 0

a = -3²

b = 10

c = 32

D = 100 + 3² * 1 * 32 = 109 * 32 = 3488

X₁ = 10/2 = 5

X₂ = -10/2 * 1 = -5

գ) -11x² + 3x + 8 < 0

a = -11²

b = 3

c = 8

D = 3² + (-11) * 1 * 8 = (-20) * 8 = -160

X₁ = 3/2 = 0

X₂ = -3/2 * 1 = -1