Question

Please solve the question no. 21

Answer 1

Answer - Option(a)

Explanation:

Given Equation is x + y = 5, xy = 6.

We know that x^3 + y^3 = (x + y)^3 - 3xy(x + y)

                                        = (5)^3 - 3(6)(5)

                                         = 125 - 90

                                         = 35.


Hope this helps!

Answer 2

Hi,

Please see the attached file!


Thanks