jim: is your dinner ready at 3?
ann: no, usually dinner ready later.
jim: do you always have fish for dinner?
ann: at our table there is always seafood, but it is not always the fish. my family loves seafood, they are very useful.
jim: do you always begin your dinner at 5 ?
ann: yes, in this time my dad comes back from work, and we содимся dinner with the whole family.
jim: does your sister like to eat fish for lunch?
ann: yes, i think so.
jim: does your father bring ice cream every day?
ann: yes, my sister and i are very fond of ice cream.
jim: your silly cat doesn"t like ice cream, does he?
ann: it's strange, but my cat hates ice-cream
Объяснение:
х1= -9+√129 / 8 х2=-9-√129/8
Их сумма -9+√129 / 8 +(-9-√129/8)= -9+-9+√129 -9-корень из 129/8= -18/8=-2.25