Question

without factorisation find two nature of roots of quadratic equation 4x²-12x+a​

Answer 1

Step-by-step explanation:

Here a=4,b=-12 and c=-9

D= √b²-4ac

D= √(−12)²−4(4)(−9)

D=144+144=288

Since,D>0 the roots are real and unequal.