Question

3. What is the value of K, if the root
of 2x2-6x+K=0 are real and equal ?
OO
O 9/2
O 3
0 -3
O Other:​

Answer 1

if the roots are equal and real

then discriminent is 0

D=b^2-4ac

0=(-6)^2-4(2)(k)

0=36-8k

8k=36

k=36/8

k=4.5

so the answer is 4.5