Question 343183
9x(9x^(4)-3yx+2)

Arrange the variables alphabetically within the expression -3yx.  This is the standard way of writing an expression.
9x(9x^(4)-3xy+2)

Multiply 9x by each term inside the parentheses.
81x^(5)-27x^(2)y+18x



-12x^(2)y^(3)(-3+2x^(4)y^(5)-5)

Subtract 5 from -3 to get -8.
-12x^(2)y^(3)(-8+2x^(4)y^(5))

Reorder the polynomial -8+2x^(4)y^(5) alphabetically from left to right, starting with the highest order term.
-12x^(2)y^(3)(2x^(4)y^(5)-8)

Multiply -12x^(2)y^(3) by each term inside the parentheses.
-24x^(6)y^(8)+96x^(2)y^(3)


5yx^(5)(-7x^(2)+3xy^(4)-xy)

Reorder the polynomial -7x^(2)+3xy^(4)-xy alphabetically from left to right, starting with the highest order term.
5yx^(5)(3xy^(4)-7x^(2)-xy)

Multiply 5yx^(5) by each term inside the parentheses.
15x^(6)y^(5)-35x^(7)y-5x^(6)y^(2)