Question

expand (-x+2y+z)²
please​

Answer 1

Step-by-step explanation:

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

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

= x²+4y²+z²-4xy+4yz-2xz

Answer 2

Answer:

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

Step-by-step explanation:

solve this on this formula:

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