Question

Factorise 1. x-9x²y +27xy²-27y¹ (2) 2.8y'- 125x³​

Answer 1

Answer:

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

+(2)^ ^ 2-(5 =(5x-3y+2)[(5x)^ ^ 2+(-3y)^ ^ 2+(2)^ ^ 2-(5x (-3y)-(-3y)(2)-(2)(5x)]

+15xy+ =(5x-3y+2)(25x^ ^ 2+9y^ ^ 2+4+15xy+ 6y-10x)