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10の平方根は?
±−10\pm\sqrt[]{-10}±−10
±10\pm\sqrt[]{10}±10
−10-\sqrt[]{10}−10
−10\sqrt[]{-10}−10
10\sqrt[]{10}10
121の平方根は?
±121\pm\sqrt[]{121}±121
121\sqrt[]{121}121
−121-\sqrt[]{121}−121
11
±11
(−9)2\sqrt[]{\left(-9\right)^2}(−9)2 を根号を用いずに表すと、
-9
±3
9
-3
3
(3)2\left(\sqrt[]{3}\right)^2(3)2 =
±9
3\sqrt[]{3}3
(− 0.7)2\left(-\ \sqrt[]{0.7}\right)^2(− 0.7)2 =
ー0.7
0.49
-0.49
0.7
±0.7
(15)2\left(\sqrt[]{\frac{1}{5}}\right)^2(51)2 =
125\frac{1}{25}251
15\frac{1}{5}51
−15-\frac{1}{5}−51
±15\pm\frac{1}{5}±51
−125-\frac{1}{25}−251
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