Fall factor: 27x³ + y³-9xyz and Fall factor: 27x³ + y³-9xyz
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wrong question
right question 27x^3+y^3+z^3-9xyz
Step-by-step explanation:
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Factorise : 27x3 + y3 + z3 ...
27x3+y3+z3−9xyz
27x3+y3+z3−9xyz
=(3x)3+y3+z3−9xyz
=(3x)3+y3+z3−3×3x×y×z
using identity
a3+b3+c3−3abc=(a+b+c)(a2+b2+c2−ab−bc−ca)
Putting a=3x,b=y,c=z
=(3x+y+z)(9x2+y2+z2-3xy-yz-3zx)
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