X ^ 2 - 100 July 8, 2019 16 32 64 128 X ^ 2 - 100x + 2000 X ^ 2 - 100x + 2000 = 0 X 2 100 X 2 100 0 X 2 100x X 2 100 factor X 2 100 20x X 2 100x 2400 0 X 2 100x 2400 X 2 100 factorise X 2 100 solve X 2 100 16 X 2 100 25 X 2 100 9 X 2 100 10
