Question

I could really use some help guys.

Solve the system by the addition method.

x2 - 3y2 = 1
3x2 + 3y2 = 15
A. {( 1, 2), ( -1, 2), ( 1, -2), ( -1, -2)}

B. {( 1, 2), ( -1, -2)}

C. {( 2, 1), ( -2, 1), ( 2, -1), ( -2, -1)}

D. {( 2, 1), ( -2, -1)}

Answer 1

its c

Answer 2

thank you

Answer 3

give me medal pleASE