Question

wich of the following quadratic equation has root-3 and-5​

Answer 1

Answer:

x²-(a+b)x+a×b=0, where 'a' and 'b' are the roots of the equation. According to the given information, a = 4-√7. So, the other root will be its conjugate, i.e., b=4+√7. Thus, the quadratic equation is x²-8x+9=0