CHAPTER 12: RADICALS Contents

You can think of the square root as the opposite or inverse of squaring. Actually, numbers have two square roots. One is positive and one is negative. 5 ⋅5 = 25 and −5 ∙−5 = 25. To avoid confusion . √25 = 5 and −√25 = −5 What about these square roots? √20. √61 ................
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