Question

If x=5 is a root of equation kx square-14x-5=0 find value of k

Answer 1

kx square -14x-5=0

k square× 25-14×5-5=0

k square ×25-70-5=0

k square ×25-75=0

k square ×25=0+75

k square ×25=75

k square =75÷25

k square =3

k=1.73