Simplify the polynomial. Then find its value for the given value of the variable.
3x^3 – x^3 +5x^3-9x^-3?

if x= -1

The simplified form of the expression is :_______
If x = -1, the value of the expression is:_______

plssss help, fill in the blanks

Simplify the polynomial Then find its value for the given value of the variable 3x3 x3 5x39x3 if x 1 The simplified form of the expression is If x 1 the value o class=