Question

упростите (4х-у)(х-2у-1)

Answer 1

$(4x-y)(x-2y-1)=4x^2-8xy-4x-xy+2y^2+y=4x^2-4x-9xy+2y^2+y$

Answer 2

Ответ:

4x^2-8xy-4x-xy+2y^2+y=4x^2-9xy-4x+2y^2+y