Question

let us factorise the following algebric expression :

a²-9b²+4c²-25d²-4ac+30bd​

Answer 1

Answer:

a²-9b²+4c²-25d²-4ac+30bd

(a×a) - (9b×9b) +(4c×4c) -(25d×25d) - 4ac +30bd

1a-81b+16c-625-4ac+30bd

is your right answer

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Answer 2

Answer:

a²-9b²+4c²-25d²-4ac+30bd  

(a×a) - (9b×9b) +(4c×4c) -(25d×25d) - 4ac +30bd  

1a-81b+16c-625-4ac+30bd