Question

factorise four a square plus nine b square plus twenty five c square plus ttwelve ab minus thirty bc minus twenty ca​

Answer 1

Answer:

Step-by-step explanation:

4a^2+9b^2+25c^2+12ab-30bc-20ca

Factorise using: (x+y+z)^2= x^2+y^2+z^2+2xy+2yz+2xz

We get, (2a+3b+5c)^2 (Answer)

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