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