Yes, it is 2
No. it's not a prime number when x = 40, 41, 81,82 ...
x[x+1] squared Simplified is, to my knowledge, x squared plus ( x + 1) squared
(x+y)2
(a + x^2)(b + y^2)
It is a quadratic expression in the variable x.
X = √63
x=9 squared
If x is equal to 5, then x squared plus 25 is equal to 50.
1
It is a quadratic expression in the variables x and y.
8 + X SQUARED