turkey-yks 2012 Q7

turkey-yks · Other · lys1-math Simultaneous equations
Let x and y be real numbers such that
$$\begin{aligned} & x ^ { 2 } - 4 y = - 7 \\ & y ^ { 2 } - 2 x = 2 \end{aligned}$$
Given this, what is the sum $x + y$?
A) 3
B) 4
C) 5
D) $\frac { 4 } { 3 }$
E) $\frac { 5 } { 3 }$
Let x and y be real numbers such that

$$\begin{aligned}
& x ^ { 2 } - 4 y = - 7 \\
& y ^ { 2 } - 2 x = 2
\end{aligned}$$

Given this, what is the sum $x + y$?

A) 3\\
B) 4\\
C) 5\\
D) $\frac { 4 } { 3 }$\\
E) $\frac { 5 } { 3 }$