expand (2x-3y+z)square
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Step-by-step explanation: ( a+b-c)² = a² + b² + c² + 2ab -2bc -2ca
( 2x+3y-z)² = (2x)² + (3y)² + (-z)² + 2 * 2x * 3y - 2 * 3y * z - 2 * z * 2x
=4x² + 9y² + z²+ 12xy -6yz - 4xz
Hopes it helps :)
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