Question

if two line are perpenduvular l1=x+(a-1)y=1 and l 2 =2x+a^2y=1 then find the value of a ​

Answer 1

Answer:

If the lines are perpendicular, then (-1/a-1)(-2/a^2) =-1

2=-(a^3 - a^2)

a^3 - a^2 +2=0

a=-1