The factors of 4 x^2 + 9y^2 + 16 z^2 +12 x y – 24 y z -16 x z are:
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4x ^2+9y^2+16z ^2 + 12xy- 24 y z - 16 x z
use the perfect square formaula , a^2 + b ^ 2 + c^2 + 2ab + 2ac + 2bc = ( a + b + c ) ^2 , where a = 2x , b = 3y and C = - 4z ( 2x + 3y - 4z ) ^ 2
( 2x + 3y - 4z ) ^ 2
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