4x²+9y²+16z²+12xy-24yz-16zx..
correct answer is my question........
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Ⓡⓔⓕⓕⓔⓡ ⓣⓞ ⓣⓗⓔ ⓟⓘⓒ...
ⓘⓣ ⓗⓔⓛⓟⓢ ⓤ
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→ 4x²+9y²+16z²+12xy-24yz-16zx
→ 4x²+9y²+16z²+12xy-24yz-16zx
→ (2x)² + (3y)² + (4z)² + 2(2)(3)xy - 2(3)(4)yz - 2(2x)(4z)
→ [2x + 3y - 4z] [2x + 3y - 4z]
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