| Links ordered by themes: |
| fraction geometry equations arithmetic operation trigonometry accessories |
| themes class 9 |
| square |
| extract roots |
| Pythagoras, theorem of side and height |
| quadratic equations |
| simplify terms |
| system of equations |
| root-terms |
| radical equation |
| fractional equation |
| exempt equations |
| You use the method of equating while exempting both equations to the same unknown and then compose them to get one equation with only one unknown. Detect this unknown number and enter is in the first equation. | |
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