Решите задачу:
y^2+8y -4y+3+1 y^2+4y+4 (y+2)^2 y+2 = ------------------------------- = ------------------------ = ---------------- = ----------- 4-y^2 ( 2-y)(2+y) (2-y)(2+y) 2-y при y≠2 и y≠ - 2