factorise 25a²-9b²+12bc-4c²
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15
Answer:
Step-by-step explanation:
25a² – 9b² +12bc – 4c²
= 25a² – (9b²–12bc + 4c²)
=25a² – {(3b)² – 2*3b*2c + (2c)²}
=(5a)²– (3b –2c)²
=(5a–3b+2c) (5a+3b–2c) [ans.]
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3
Answer:
The above⬆ is the answer
Step-by-step explanation:
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