State whether the statement is True or False.
Expand: $(2 a - 5 b - 4 c)^{2}$ is equal to $4 a^{2} + 25 b^{2} + 16 c^{2} - 20 a b + 40 b c - 16 c a$ .

True

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False

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Solution

The correct option is A True
$M u l t i p l y (2 a - 5 b - 4 c) (2 a - 5 b - 4 c) = 4 a^{2} + 25 b^{2} + 16 c^{2} - 10 a b + 20 b c - 8 c a - 10 a b + 20 b c - 8 c a = 4 a^{2} + 25 b^{2} + 16 c^{2} - 20 a b + 40 b c - 16 c a$

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