hasil penjabaran dari(2x-y+3z)² adalah

= (2x-y+3z) (2x-y+3z)
= 4x^2 - 2xy + 6xz - 2xy + y^2 - 3yz + 6xz - 3yz + 9z^2
= 4x^2 - 4xy + 12xz - 6yz + 9z^2 + y^2

maaf kalo salah

(2x - y + 3z)²
= (2x - y + 3z)(2x - y + 3z)
= (2x . 2x) + (2x . -y) + (2x . 3z) + (-y . 2x) + (-y . -y) + (-y . 3z) + (3z . 2x) + (3z . -y) + (3z . 3z)
= 4x² - 2xy + 6xz - 2xy + y² - 3yz + 6xz - 3yz + 9z²
= 4x² + y² + 9z² - 2xy - 2xy + 6xz + 6xz - 3yz - 3yz
= 4x² + y² + 9z² - 4xy + 12xz - 6yz