SOLUTION: Find the number of real solutions using the discriminant x^2 - 25 = 0 I already tried doing this and got two real solutions, but it was marked wrong. Please show your working

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Find the number of real solutions using the discriminant x^2 - 25 = 0 I already tried doing this and got two real solutions, but it was marked wrong. Please show your working      Log On

There is no term in x, so we put 0x in as a place holder.

x^2 + 0x - 25 = 0

So a=1, b=0, and c=-25

Discriminant = b^2-4ac = 0^2-4(1)(-25) = 0+100 = 100

100 is positive so there are 2 real solutions.

Edwin