Question

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Answer 1

Answer:

a = -1

Step-by-step explanation:

This is wrong

if,

(a+1)(a+1) = 0

Therefore,

(a+1) = 0 or (a+1) = 0

Thus,

a = -1

Answer 2

Hello!

a can't be equal to 1

a = -1

Reasoning:

= (a + 1 ) ( a + 1) = 0 can be written as

= (a+ 1)² = 0

a + 1 = 0

a = -1

Verification :

Lets verify this,

• let a = 1

( 1+1)² = 2² = 4

4 ≠ 0

RHS ≠ LHS

See, it doesn't yield the answer as 0 when a = 1

• let a = -1

(-1+1)² = 0² = 0

RHS = LHS

Hence a = -1