Formula quick reference
Search any keyword below, or type formula sheet on WhatsApp for instant chapter-wise cheat sheets.
| Topic | Formula |
|---|---|
| Quadratic roots | x = [-b ± √(b²-4ac)] / 2a |
| Pythagoras | a² + b² = c² |
| Circle area | πr² |
| Force | F = ma |
| Kinetic energy | KE = ½mv² |
| Ohm’s law | V = IR |
| Electric power | P = VI = I²R |
| Density | ρ = m / V |
| Mole | n = given mass / molar mass |
| Photosynthesis | CO₂ + H₂O → C₆H₁₂O₆ + O₂ (light, chlorophyll) |
| Speed | s = d / t |
| Simple interest | SI = PRT / 100 |
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