Minus one party

Weekly Problem 47 - 2013
What is the value of the given expression?
Age
11 to 14
Challenge level
filled star empty star empty star
Exploring and noticing Working systematically Conjecturing and generalising Visualising and representing Reasoning, convincing and proving
Being curious Being resourceful Being resilient Being collaborative

Problem



Calculate $[(-1) + (-1)^2 ]\div [(-1)-(-1)^2]$

 

If you liked this problem, here is an NRICH task which challenges you to use similar mathematical ideas.