factorise the following
step by step plz
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Answer:
=(3x+1+5y)(3x+1-5y)
Step-by-step explanation:
9x^2+6x+1-25y^2
=(3x)^2+1+(2 X 3x X 1)-(5y)^2
=(3x+1)^2- (5y)^2
=(3x+1+5y)(3x+1-5y)
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