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Question

State whether the statement is True or False.
Expand: (2a−5b−4c)2 is equal to 4a2+25b2+16c2−20ab+40bc−16ca.

A
True
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B
False
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Solution

The correct option is A True
Multiply(2a5b4c)(2a5b4c)=4a2+25b2+16c210ab+20bc8ca10ab+20bc8ca=4a2+25b2+16c220ab+40bc16ca

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