Hard SAT Math Question 34 — Video Explanation | 1600.now

0:00

If

c

is a constant greater than or equal to

2

,

x^{2} + y^{2} = 5 c

, and

x y = 5

, what is

(x + y)^{2}

in terms of

c

?

A

2 c + 5

B

2 c + 10

C

4 c + 5

D

5 c + 10