Factorise 4x²+2x-3y+8y²-12xy
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Step-by-step explanation:
(i) 4x²+9y²+16z²+12xy -24yz -16xz
Solution:
4x²+9y²+16z²+12xy -24yz -16xz
= (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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