преобразуйте в многочлен выражение:2(d-5)d-(d+1)в кубе

Определите в предложениях видовременные формы глаголов и укажите их инфинитив 1)The bus stop is not far from here. 2)Several Moscow University physicists work at this problem. 3)this student first came to Moscow in 1985. 4)In a few days she will leave for Paris. 5)He is writing his test program now. 6)Have you bought the new software? 7)We shall be translating this te[t for two hours. 8)We had studied much defore we wrote our own programs. 9)They will have got the results of new devices tests by summer. 10)I have been waiting for you since 10 a.m.

піднести до квадрата(-3+а)²

при каком значении λ вектор а (1; λ) имеет длину 3?