Nine less than the square of x less twice y
You asked:
Evaluate the expression: \({\left( x - 2 y \right)}^{2} - 9\)
MathBot Answer:
Evaluated
\(\displaystyle {\left( x - 2 y \right)}^{2} - 9 = \left(x - 2 y\right)^{2} - 9 \)
Expanded
\[{\left( x - 2 y \right)}^{2} - 9 = x^{2} - 4 x y + 4 y^{2} - 9\]
Factored
\[{\left( x - 2 y \right)}^{2} - 9 = \left(x - 2 y - 3\right) \left(x - 2 y + 3\right)\]