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下列何者不是 3\sqrt[]{3}3 的同類方根?
12\sqrt[]{12}12
63\frac{6}{\sqrt[]{3}}36
243\frac{\sqrt[]{24}}{3}324
16 13\sqrt[]{16\ \frac{1}{3}}16 31
(複選)若3、4、x是直角三角形的三邊長,則x可能為?
5
2
7
7\sqrt[]{7}7
13−2=?\frac{1}{3-\sqrt[]{2}}=?3−21=?
2+37\frac{\sqrt[]{2}+3}{7}72+3
3−27\frac{3-\sqrt[]{2}}{7}73−2
3−23-\sqrt[]{2}3−2
3+29\frac{3+\sqrt[]{2}}{9}93+2
因式分解:x(2x+1)-x(x+2)=
因式分解: 9x2−16=9x^2-16=9x2−16=
因式分解: x2−5x−14=x^2-5x-14=x2−5x−14=
因式分解: 4x2−20x+25=4x^2-20x+25=4x2−20x+25=
已知多項式5x2+34x-7可因式分解成(5x-1)(x+m),則m=
BD‾\overline{BD}BD = ?
A(2,-3)和B(3,-5),則 AB‾\overline{AB}AB = ?
BD‾=?\overline{BD}=?BD=?
512\frac{5}{12}125
4
125\frac{12}{5}512
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