My brother Alex is a footballer and he is very fit. He usually (1)sleeps eight hours and doesn’t go to bed late . He does morning(2) exercises regularly and runs 10 km every day. Alex (3) doesn't like watching TV or playing computer games. He thinks it’s (4) better to ride a bike or walk in the park . Last year my brother (5) kept to a very strict diet of vegetables, water and fish before an important match. I hope Alex (6) make a very successful career in football because he is a real sportsman. sleep
a = 1
b = 3
c = 2
D = b² - 4ac = 9 - 8 = 1
х₁ = (-b + √D)/2a = (-3+1)/2 = -1
х₂ = (-b - √D)/2a = (-3-1)/2 = -2