Observe the number of the following lines to find the rule, - 1,4, - 9,16, - 25,36, - 49,64, - 81······ According to the law, what is the 12th number?

Observe the number of the following lines to find the rule, - 1,4, - 9,16, - 25,36, - 49,64, - 81······ According to the law, what is the 12th number?

Hello, I'm glad to answer your question
The 12th number is 144
The rule is
Even columns are negative
Even columns are positive
Let go of the positive and negative signs, and you have to
1=1x1
4=2x2
9=3x3
and so on
144=12x12
And 12 is even, so it's 144