Question

-75х"5 у" 2+120х"3 у" 3-48ху"4​

Answer 1

-75x^5y²+120x³y³-48xy^4=

=-3xy²(25x²-40x²y+16y²)=

=3xy²(5x²-4y)²=

=-3xy²(5x²-4y)(5x²-4y)=

Answer 2

It looks like you've provided an expression, but it seems to be incomplete or unclear. There are variables (x and y) and some arithmetic operations, but the expression is not properly formatted. Additionally, there are quotation marks around the variables, which might be causing confusion.

If you can provide a properly formatted mathematical expression, I would be happy to help you simplify it or solve it. Please make sure to specify the operations and the order of operations (such as multiplication, addition, subtraction, etc.) in the expression.