Question

express it in Qbasic expression​

Answer 1

Answer:

x = (-b + sqr(b * b - 4 * a * c)) / (2 * a)

x2 = (-b - sqr(b * b - 4 * a * c)) / (2 * a)

Usually when squaring a number I just use multiply it by itself like above.  If you actually want to use the exponent 2, then it would instead be:

x = (-b + sqr(b ^ 2 - 4 * a * c)) / (2 * a)

x2 = (-b - sqr(b ^ 2 - 4 * a * c)) / (2 * a)