y$^2$-9x$^2$
You asked:
Evaluate the expression: \({y}^{2} - 9 \cdot {x}^{2}\)
MathBot Answer:
Evaluated
\(\displaystyle {y}^{2} - 9 \cdot {x}^{2} = - 9 x^{2} + y^{2} \)
Factored
\[{y}^{2} - 9 \cdot {x}^{2} = - \left(3 x - y\right) \left(3 x + y\right)\]