Answer:
-421632x
Step-by-step explanation:
Ok so first to the exponenets
3x^5 means 3x(multiplied by)3x(multiplied by)3x(multiplied by)3x(multiplied by)3x
So, 3x3x3x3x3 is 243
So we got 243x-75x^3
Next up we do 75x^3 or 75x(multiplied by)75x(multiplied by)75x
243x-421875x
Ok now we subtract
-421632x
