Question

9 x square minus kx + 81 is equal to zero

Answer 1

A= 9 b = k c=81

b^2 - 4ac =0

Put the value and solve

Answer 2

Answer:

a=8, b=k, c= 0

we have to substitute the value in the following equation

k^2-4ac=0

Step-by-step explanation:

by substituting we get

k^2-4(9)(81)=0

k^2-2916=0

k^2=2916

k=√2916

k=√54×54

therefore k=+54