Pls answer the question ASAP Share with your friends Share 0 Kailash Singh answered this Dear Student, Given x2−4x−a2=0 D=16−4.1.(−a2) D=16+4a2 α+β=4 α⋅β=−a2 That mean one root is positive and other is negative −2≤a≤2 So, answer is A Regards 0 View Full Answer