Question

write in expanded form (-x-2y-z)^2

Answer 1

Answer:

(x^2 )+(4y^2)+(z^2)-4xy+4yz-2xz

Step-by-step explanation:

use the property (a+b+c)=a^2+b^2+c^2+2ab+2bc+2ca

Answer 2

Step-by-step explanation:

by (a+b+c)² we can expand,,.Here a=-x

b=-2y and c=-z

we know that( a+b+c)²=a²+b²+c²+2ab+2bc+2ca

=(-x²)+(-2y)²+(-z²)+2(-x)(-2y)+2(-2y)(-z)+2(-z)(-x)

x²+4y²+z²+4xy+4yz+2zx

I hope it helps you