Question

Each equation is followed by the values of the variable. Decide whether these values the the
solution of those equation.
2 a + 4 = 0, a=2,- 2,1​

Answer 1

Answer:

a=-2

Step by step explanation :

if we take a=2

then

2a + 4 = 0

2×2+4=0

4+4 = 0

8 ≠ 0

if we take a=-2

then

2a + 4 = 0

2(-2)+4=0

-4+4 = 0

0=0

if we take a=1

then

2a + 4 = 0

2×1+4=0

2+4 = 0

6≠0

therefore the value of a is -2

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