Question

Помогите решить пожалуйста

Answer 1

Ответ:

1) (4x+2y+z)×(x-3y)= 4x × (x-3y)+2y × ( x - 3y) + z × ( x - 3y) =

${4x}^{2} - 12xy - {6y}^{2} + xz - 3yz = {4 x}^{2} -10xy - {6y}^{2} + xz - 3yz$

2)

$(x + {y}^{2} + {z}^{2} ) \times (x - {y}^{2} ) = {x}^{2} - {xy}^{2} + {xy}^{2} - {y}^{4} + {xz}^{2} - {y}^{2} \times {z}^{2} = {x}^{2} - {y}^{4} + {xz}^{2} - {y}^{2} \times {z}^{2}$