To run the app download .exe file in debug folder . To see the codes just tap any file that u want to see in folder. Examples that my teacher gave me (+2.34-1.34)(+3.14) (-x+1)(+x+1) (+3.14x1-1)(+1.000x1) (-21x2+4.2x1+1.25)(+1)(+x) (-x+1)(+x)(+x+1) standard form example: (+1x2+3x1-4x)(2x3+3x1-7x9)(+1x2+3x1-4x)(2x3+3x1-7x9) U can simply add any other forms of polynomials by if(string=="form u want"){ code that converts to standrad form; } //u have to use iterators