Question

If x - y = 6 and xy = 40, then find x2 + y2 ?

A) 116 B) 80 C) 89 D) 146

Answer 1

Answer:

A)116

Step-by-step explanation:

(x-y)^2= x^2+y^2-2xy

putting the values which is given in question

6^2=x^2+y^2 -2*40

36+80=x^2+y^2

116