Question

преобразовать произведение в многочлен
(x+y)(z+1)=
(x+2)(y-z)=
(x-1)(x+y-3)=
(x-y)(x+y)=
(x+1)(x+1)=

Answer 1

1) xz+x+yz+y
2) xy-xz+2y-2z
3)
${x }^{2} + xy - 3x - x - y + 3 = {x}^{2} + xy - 4x - y + 3$
4)
${x}^{2} - {y}^{2}$
5)
${x}^{2} + x + x + 1 = {x}^{2} + 2x + 1$