Question

If a+a/1+2=0
then a¹¹+a¹² = ??​

Answer 1

Step-by-step explanation:

a+a/1+2=0

a+a+2=0

a+a= -2

a is (-1) because a=a both numbers should be same a= -1

(-1)+(-1)= -2

-1 -1= -2

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a power 11 + a power 12

a= -1

-1^11+(-1^12)

-1×-1×-1×-1×-1×-1×-1×-1×-1×-1×-1= -1

-1×-1×-1×-1×-1×-1×-1×-1×-1×-1×-1×-1= -1

-1 + (-1)= -1 -1 = -2

Answer 2

Answer:

a+1/a+2=0

or,a²+1+2a=0

or,(a+1)²=0[ As we know (a+b)²=a²+2ab+b²]

or,a+1= 0

So,a= -1

As your question,

a¹¹+a¹²

= (-1)¹¹+(-1)¹²

=-1+1

=0

It is your answer.