Question

Преобразуйте вырожение
а) (у-3)²
б)(4х1)(4х-1)

Answer 1

$(x-3)^2= y^2-2y*3+3^2 = y^2-6y+9\\(4x+1)(4x-1) = (4x)^2 -1^2 = 16x^2-1$