1. 2x^4-32 = 2(x^4-16) = 2(x^2-4)^2
Ответ: B
2. a = 4x-5
а) S = 6(4x-5)^2 = 6(16x^2-40x+25) = 96x^2-240+150
б) V = (4x-5)^3 = 64x^3-240x^2+300x-125
3. a) 87^2-174*67+67^2 = (87-67)^2 = 20^2 = 400
б) (38^2-17^2)/(47^2-361) = (38-17)(38+17)/(47^2-19^2) = (21*55)/(47-19)(47+19) = (21*55)/(28*66) = (21*5)/(21*6) = 5/8