(с^2-b)^2-(c^2-1)(c^2+1)+2bc^2


   упростите вырожения и найдите его значения при:b=-3

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1. Joe began to work
on his own project after the company … (to fire) him. 2. … (to hear) the news
on the radio before you saw the program on TV? 3. Jacob didn’t want to read the
book because he … (to see) already the movie. 4. The match … (to begin) already
when we … (to enter) the stadium. 5. Until Susan … (to meet) Jeremy, she never
… (to fall) in love. 6. Mr. Smith … (to smoke) for year before he … (to decide)
to give up this bad habit. 7. … (to drive) Kate ever on the highway by herself
before that accident? 8. How many butterflies … (to catch) the boys by the time
it started raining? 9. Parents … (to forbid) them to go to the forest, hadn’t
they?