Question

determine the value of C,if the roots ,of an equation 4XSequre-2X+C=0,are same. (A)1,(B)-1,(C)4,(D)1/4​

Answer 1

If quadratic equation a(x^2)+bx+c is having same roots then the condition is (b^2)-4ac=0

so substitute a=4 ,b=-2 and c=C

(-2^2)-4×4×C=0

4=16C

C=4/16

C=1/4;