if A= c+3y²-6xy, B= -3x²+4y²-xy+x-y+3, c=2x²-y²+8xy, D= y²+8 and E=x²-3xy. find A-B+C+D+E
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Step-by-step explanation:
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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