Question

If one root of quadratic equation is 7+4√2 Then product of roots is​

Answer 1

Answer:

17

Step-by-step explanation:

If one root of quadratic equation is 7+4$\sqrt{2}$ then other root is 7-4$\sqrt{2}$

Product of roots is 7+4$\sqrt{2}$ * 7-4$\sqrt{2}$

    (7)²  - (4$\sqrt{2}$)²  =  49 - (16*2)                  { (a+b) * (a-b) = a² - b² }

                          = 49 - 32

                          = 17