👤

1. 2a + 2b when a= 1 and b= -2
2. 3a³- b when a= -1 and b= 2
3. a² - 3b - ab when a= -1 and b= 1
4. b³ + 4a when a= - 2 and b= 1


Sagot :

I provided the step-by-step solution of your questions.

I hope this would help.

View image Princesssombreyo