x=6.5 y=3.5
(x+y)(x-y)
You asked:
Given the following equations: \[\begin{aligned}x &= 6.5\\ y &= 3.5\end{aligned}\] Evaluate \(\left(x + y\right) \cdot \left(x - y\right)\).
MathBot Answer:
\[\left(x + y\right) \cdot \left(x - y\right) = \left(6.5 + 3.5\right) \cdot \left(6.5 - 3.5\right) = 30\]