Question

(2A - 3b + 7C)² can you help me :)
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Answer 1

Answer:

Step-by-step explanation:

hope this helps bro

Answer 2

Answer:

The answer is 4a^2+9b^2+49c^2-6ab-21bc+14ac

Step-by-step explanation:

(2a-3b+7c)^2

=4a^2+9b^2+49c^2-(2a×3b)-(3b×7c)+(2a×7c)

=4a^2+9b^2+49c^2-6ab-21bc+14ac