Question

25xsquare+9y square-30xy Factorise the following expression

Answer 1

Answer:

Step-by-step explanation:

25x^2+9y^2-30xy

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

Using the identity (a-b)^2=a^2+b^2-2ab

Answer=(5x-3y)^2

=(5x-3y)(5x-3y)

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