IV. Perform the indicated operation on polynomials

10. (x-4)-(-5x + 5) =


11. x X5 =

12. (x+3)(x-5) =


13. 3x² ( x3 +2x-1) =


14. X9 =
× 8
---------


15. x3 y5 z7 =

x y 7 z6
------------------------


pasagot po ng maayos pls​