1.

$$\frac{{{a^2} - {b^2} - 2bc - {c^2}}}{{{a^2} + {b^2} + 2ab - {c^2}}}$$is equivalent to = ?

A. $\frac{{a - b + c}}{{a + b + c}}$$
B. $\frac{{a - b - c}}{{a - b + c}}$$
C. $\frac{{a - b - c}}{{a + b - c}}$$
D. $\frac{{a + b + c}}{{a - b + c}}$$
Answer» D. $\frac{{a + b + c}}{{a - b + c}}$$


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