Question

plz help me to understand this question give answer stap by stap.​

Answer 1

Hey mate here is your answer:-

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Q. 125a^3+b^3+64c^3-60abc

= [(5a)^3+(b)^3+(4c)^3] - [3(5a)(b)(4c)]

= [5a+b+4c] [(5a)^2+(b)^2+(4c)^2-(5a)(b)-(b)(4c)-(4c (5a)

= [5a+b+4c] [25a^2+b^2+16c^2-5ab-4bc-20ac]

This factorise is done by indentity:-

x^3+y^3+z^3-3xyz

Hope you liked it a lot!!!!!

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