Question

if the discriminant is -7 how many real number solutions does the quadratic equation have

Answer 1

let D be the discriminant

D = b^2 - 4ac is the formula you use to calculate the discriminant (from ax^2 + bx + c = 0)

Answer 2

you have 3 cases

if D > 0, you have 2 real solutions which are distinct and different

if D = 0, then there is exactly one solution

if D < 0, then there are no real numbered solutions (instead you'll have complex number solutions)

Answer 3

so if D = -7, which cases arises?