For how many different negative values of x is $\sqrt{x +150}$ a positive integer?

Hint:  how many perfect squares are there between 0 and 150?

a=-149;c=2#(a+150);printc, a; a++;if(a<100, goto1, 0)
OUTPUT:
-149, -146, -141, -134, -125, -114, -101, -86, -69, -50, -29, -6 = 12 negative values.