Question

the roots of x²-(a+1)x+b²=0 are equal. then which of the following can be the values of a and b?​

Answer 1

Step-by-step explanation:

x²-(a+1)x+b²=0

Let the roots be p, p

we know that

1)p+p=a+1. 2)p×p=b²

1)2p=a+1. 2)p²=b²

1)p=(a+1)/2. 2)p=b

Equate the values of p

so (a+1)/2=b

Here option is not given in the question. If you know the options, substitute the value of a and b and check which one satisfies the above equation