Question

N squared + n squared+ n squared for n = - 1

Answer 1

given

`{n}^(2) + {n}^(2) + {n}^(2)`

for n = -1

substitute them into the equation

`= ( { - 1})^(2) + ( { - 1})^(2) + ( { - 1)}^(2)`

when you square a negative number, it becomes positive.

because negative×negative = positive

`= 1 + 1 + 1`

`= 3`

as final answer