Ответы и объяснения

2013-10-18T13:36:08+00:00
А)(-3/2)^2 + (11/4)^2 = 9/4 + 121/16 = (9*4 + 121)/16 = 157/16
Б) -3^4 * 5/54 + (-2/7) = (-81*5)/54 - 2/7 = -405/54 - 2/7 = (-405*7 -2*54)/378 = (-157-108)/378 = - 265/378