Question

3xsquare+2√5x-5=0 determine whether to given quadratic equation have real root and if so ,find the roots

Answer 1

apple discriminant formula

b square - 4ac -->  4*5  - 4*3*-5 -->   20+60 = 80

real roots if > 0

Answer 2

if b² > 4ac , then the roots are real

 here in the question 
 b=2√5  a=3  c=-5

Substitute the values-

b²=20
4ac=-60

hence  b² > 4ac , so the roots are real..