1.

(-3a+5b+4c)^2 expand the following​

Answer»

Answer:

Step-by-step EXPLANATION:

(-3a)^2+(5B)^2+(4c)^2  -2(3a) (5b) +2(5b) (4c) - 2(4c) (3a)9a^2 +25b^2 +16c^2 -30AB +40bc - 24ca

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