Question

When b²-4ac is equal to zero ,then the rootd are two equal real number

Answer 1

Step-by-step explanation:

D= b²-4ac

1.When D=0, roots are real and equal

2.When D<0, roots are imaginary

3.When D>0, roots are real and unequal

:if its a perfect square no. and a, b , c are rational then roots are inequal and ratinal but if a , b , c is irrational roots are irrational and unequal

4.When D>= 0, roots are real.