Question

Expand (2x ─ 3y + z )2
Use appropriate identity.

Answer 1

Answer:

4x^2 + 9y^2 + z^2 - 12xy - 6yz + 4xz

Step-by-step explanation:

(2x - 3y + z)^2

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

(2x - 3y + z)^2 =

(2x)^2 + (-3y)^2 + (z)^2 + 2 * 2x * (-3y) + 2 * (-3y) * z + 2 * 2x * z

4x^2 + 9y^2 + z^2 - 12xy - 6yz + 4xz

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