Question

Expand(2a+b-5c)^2 give me answer

Answer 1

Answer:4a^2+b^2+25c^2+4ab-10bc-20ac

Step-by-step explanation:

(2a+b-5c)^2

={2a+b+(-5c)}^2

=(2a)^2+b^2+(-5c)^2+{2×2a×b}+{2×b×(-5c)}+{2×(-5c)×2a}

=4a^2+b^2+25c^2+4ab-10bc-20ac

Answer 2

Answer:

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