how to factorise 4x²+9y²+16z²+12xy-24yz-16xz?
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3
Answer:
Step-by-step explanation:
(2x*+3y*+4z)*
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4x² + 9y² + 16z² + 12xy – 24yz – 16xz
By indentity [(a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ac]
= (2x)² + (3y)² + (-4z)² + 2 x (2x) x (3y) + 2 x (3y) x (-4z) + 2 x (2x) x (-4z)
= (2x + 3y - 4z)²
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