Yes
zero?
It is 2.
this can not be solved un less with another equation
Closure of the set of integers under addition.
It is: 1.50p+2.50p+3p = 7p when simplified
an integer plus and integer will always be an integer. We say integers are closed under addition.
It cannot be done. The basic rules of math. odd integer plus odd integer = even integer. odd integer plus even integer = odd integer. Always. odd integer plus odd integer plus odd integer = odd integer. Always.
Yes
-2, -1, 0 ,1
2
If the question means solve 1+2+...+60 then 1+2+...+n = n(n+1)/2 for any integer n>0 So for n= 60 the sum is 60*61/2 = 30*61 = 1830
zero?
It is 2.
No because the discriminant of the given quadratic expression is less than zero.
this can not be solved un less with another equation
Closure of the set of integers under addition.