Answer:
2. (5b) (b2-4b+2)
= 5b x b^2 + 5b x -4b + 5b x 2
= 5b^3 - 20b^2 + 10b
3. (-3m^2) (4m-6)
= -3m^2 x 4m + -3m^2 x -6
= -12m^3 + 18m^2
4. (-2x) (2x2+x-4)
= -2x x 2x^2 + -2x x x + -2x x -4
= -4x^3 - 2x^2 + 8x
If you have any questions, feel free to send a message.
