Question

Factorise -(5x-3y)^3+(3y-6z)^3+(6z-5x)^3 ​

Answer 1

5(5x-3y)^2 - 20(3x-2y)^2

= 5[25x^2–30xy+9y^2] - 20[9x^2–12xy+4y^2]

= 125x^2–150xy+45y^2–180x^2+240xy-80y^2

= -55x^2+90xy-35y^2

= -5[11x^2–18xy+7y^2]

= -5(11x-7y)(x-y).

hope this will help you...

Answer 2

Answer:

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