If g(x)= +and h(x) = 4 - x, what is the value of (gºn)(-3)?

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

"exterior angles = 360 / number of sides.

60 = 360 / sides

sides = 360 / 60

sides = 6"

can i know which language is this?