Question

bracket x minus 2y minus z bracket square​

Answer 1

Answer

(x - 2y - z)² = x² + 4y² + z² - 4xy + 4yz - 2xz

Step-by-step explanation

(x - 2y - z)²

By using (a + b + c)² identity

= (x)² (-Z) + (-2y)² + (-z)² + 2(x)(-2y) + 2(-2y)(-z) + 2(x)

= x² + 4y² + z² - 4xy + 4yz - 2xz