Question

factorise 9a²+16b²+25c²-40bc+30ca​

Answer 1

Answer:

its incomplete question

Step-by-step explanation:

the question is 9a²+16b²+25c²-24ab-40bc-30ac

and answer is

= (3a)²+(4b)²+(5c)²-(2*3a*4b) - (2*4b*5c) + (2*3a*5c)

= (3a-4b+5c)^2