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Forum: Homework Help 2019-09-28, 15:11
Replies: 13
Views: 6,394
Posted By retina
Hmm? (-2)^4 = 16 (+2)^4 = 16 16^(1/4)...

Hmm?

(-2)^4 = 16
(+2)^4 = 16

16^(1/4) = ±2
Forum: Homework Help 2019-09-28, 02:14
Replies: 13
Views: 6,394
Posted By retina
Wot? My teacher taught me that a square root...

Wot?

My teacher taught me that a square root has two answers, a negative and a positive.

sqrt(x²) = ±x
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