Mathematics

Mathematics

Problem

If x,y,zx, y, z are in AP, then the value of (x+y−z)(y+z−x)(x + y - z)(y + z - x) is equal to (1) 8yz−3y2−4z28yz - 3y^2 - 4z^2 (2) 8yz−3z2−4y28yz - 3z^2 - 4y^2 (3) 8yz+3y2−4z28yz + 3y^2 - 4z^2 (4) 8yz−3y2+4z28yz - 3y^2 + 4z^2

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