Question

a+1-4a = ?
1. a= -2
2. a= -1
3. a= 0
4. a=1
5. a=2​

Answer 1

Ответ:

1. -2+1-4×(-2)= -1+8=9

2.-1+1-4×(-1)=0+4=5

3.0+1-4×0=1

4.1+1-4×1=2-4= -2

5.2+1-4×2=3-8= -5