Question

expand (X + 2 Y - 3 Z) ^2​

Answer 1

Answer:

$(x + 2y - 3z) {}^{2} \\ = x {}^{2} + 4y {}^{2} + 9z {}^{2} + 2 \times (x)(2y)( - 3z) + 2(2y)( - 3z) + 2( - 3z)(x) \\ x {}^{2} + 4y {}^{2} + 9z {}^{2} + 4xy - 12yz - 6xz$

Answer 2

Step-by-step explanation:

(X + 2Y - 3Z)²

X²+2XY-3XZ+2XY+4Y²-6YZ-3XZ-6YZ+9Z²

X² + 4Y² + 9Z² + 4XY - 6XZ - 12YZ