27x^3+y^3+z^3-9xyz pls help
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27x³ + y³ + z³ - 9xyz
(3x)³ + (y)³ + (z)³ - 3(3x)(y)(z)
(3x + y + z) {(3x)² + (y)² + (z)² - (3x)(y) - (y)(z) - (z)(3x)}
(3x + y + z) ( 9x² + y² + z² - 3xy - yz - 3zx )
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Step-by-step explanation:
HI DEAR,
WE ARE FAMILIAR WITH AN IDENTITY
x³+y³+z³-3xyz = (x + y+ z)(x²+y²+z²-xy-yz-zx)
FOR THIS QUESTION,
x = 3x
y= y
z = z
NOW, JUST APPLY THE IDENTITY..
(3x+y+z)(9x²+y²+z²-3xy-yz-3zx)
HOPE IT HELPS..
MARK BRAINLIEST..❤❤❤
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