Question

For what value of t, the point(2t,√t²-4) lies on x axis?​

Answer 1

Answer:

t=2

Step-by-step explanation:

(2t,√(t^2-4))

the point will be on x-axis only when ordinate value in the above point is zero.

implies that

√(t^2-4)=0

t^2-4=0

t^2=4

t=2