5. Factorize 9x2+30xy+25y2.
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Answer:
(3x+ 5y) (3x+5y)
Step-by-step explanation:
= (3x)2+ 2.3x.5y+ (5y)2. [ because (a+b)2= a2+2ab+b2]
=(3x+5y)2
=(3x+5y) (3x+5y)
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