Microsoft Math Solver — available on both iOS and Android — can solve various math problems including quadratic equations, calculus, and statistics. The app can also show graphs for the equation to enhance your understanding of the subject. [Read: Microsoft packs Excel, Word, Powerpoint, and PDF tools into one nifty app ] You can either type your query (formula) using a scientific calculator in the app, or draw it on your phone’s screen. What’s more, you can just use your phone camera, and scan the formulas written in your notebook. I just hope it works with bad handwriting, such as mine. The company uses the camera tech to scan documents in its new Office app for mobile as well. The app not only solves the formula, it also shows you how you can achieve the same result using different methods. It also provides additional learning resources on topics, including videos. Microsoft Math Solver supports 22 languages including English, German, Spanish, Simplified Chinese, and Hindi. You can learn more and find the download links of the app here.