turkey-yks 2023 Q15

turkey-yks · Other · yks-ayt Simultaneous equations
Let $x$ and $y$ be real numbers,
$$\begin{aligned} & x^{2} + 8xy = 60 \\ & y^{2} - 3xy = -15 \end{aligned}$$
Given that this holds, what is the product $\mathrm{x} \cdot \mathrm{y}$?
A) 3 B) 4 C) 5 D) 6 E) 7
Let $x$ and $y$ be real numbers,

$$\begin{aligned}
& x^{2} + 8xy = 60 \\
& y^{2} - 3xy = -15
\end{aligned}$$

Given that this holds, what is the product $\mathrm{x} \cdot \mathrm{y}$?

A) 3
B) 4
C) 5
D) 6
E) 7