For what positive values of 'm', roots of the equation x2+mx+4=0 are distinct
Open in App
Solution
Consider the equation x2+mx+4=0 This is in the form ax2+bx+c=0. The co-efficients are a = 1, b = m, c = 4 △=b2−4ac,△=m2−4(1)(4),△=m2−16 If roots are distinct, then △>0 ∴m2−16>0,m2>16,m>√16∴m>4