Mathematics, 21.07.2019 13:30 ashiteru123
Why is -a² is always negative (a ≠ 0) and why is (-a)² is always positive?
Answers: 1
, we have 
(never negative). But multiplying by -1 makes it negative.
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Why is -a² is always negative (a ≠ 0) and why is (-a)² is always positive?...
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