7*x^2+9=0;
7*x^2=-9;
x^2=-9/7;
x-это любое число, x^2=x*x;
Любое число, умноженное само на себя не может быть отрицательным
А число -9/7 - отрицательное==>> Решений нет
1 mother of chicks
2 long pasta
3 italian word
4 sweetness
5 white water
6 ice of children
7 sweetness containing cream
8 eating mouse
9 sushi basis
10 wealth of vegetables
11 fried potatoes
A) Colin has visited Astana five times.
B) Colin has seen the Duman Center two times.
C) We have eaten just bananas there. ( Мы ели там только бананы.)
или We have just eaten bananas there. (Мы только что поели там бананы.)
D) We have been to the cinema there.
1.beautiful
2.clean
3.dangerous
4.polluted
5.safe