Are the following statements true or false? Correct the false ones by changing the right-hand side and write the statements again.

(1) (–4)² = 64

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Solution

(–4)² = 64
Consider (–4)²
= (–4) × (–4)
= 16 (Product of negative sign is positive if multiplied for even number of times)
∴ (–4)² = 64 is a false statement.
Correct statement is (–4)² = 16.

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