Question

2a+4=0, a=2,-2,1
answer it fast please with full explination.​

Answer 1

Answer:

a= -2

Step-by-step explanation:

if a=2

2(2)+4=0

4+4=0

8≠0

if a= 1

2(1)+4=0

2+4=0

6≠0

if a= -2

2(-2)+4=0

-4+4=0

0=0

Answer 2

Answer:

2x-2+4=0

Step-by-step explanation:

so you have three options that a could equal.

So you must substitute to find the answer

2x2+4 does not equal 0, so we will try another

2x1+4  does not equal 0, we will try the last one

2x-2+4=0 so that is your answer