Solve {l}{a=2,b=-3,c=-2text{and}d=-5,text{then}}{text{collliesinwhichquadrant?}}{text{ateinwhichquadrantdoespoint}(-4,-4)}{text{resianplane.}}

$$\left. \begin{array} { l } { a = 2 , b = - 3 , c = - 2 \text { and } d = - 5 , \text { then } } \\ { \text { coll lies in which quadrant? } } \\ { \text { ate in which quadrant does point } ( - 4 , - 4 ) } \\ { \text { resian plane. } } \end{array} \right.$$

解 a, b, c

$$a=2$$

$$b=-3$$

$$c=-2$$

使用代入法縮短步驟

解 c=-2 中的 c。

$$c=-2$$

現已成功解出系統。

$$a=2 b=-3 c=-2$$