factorise 125x^2-9y^2
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Answer:
( 5x +3y ) (5x-3y)
Step-by-step explanation:
= 25x^2 - 9y^2
= (5x)^2 - ( 3y)^2
since it is in the form of a^2 -b^2 .
Write it in (a+b) (a-b) format
where a = 5x and b = 3y
= (5x+3y) ( 5x-3y)
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