Question

The difference between a number and its square is 870. what is the number

Answer 1

$hey \: \: mate \: \: your \: \: answer \: \: is \: \: here....... \\ = let \: no \: is \: x \\ \\ according \: \: to \: \: question \\ = {x}^{2} - x = 870 \\ {x}^{2} - x - 870 = 0 \\ {x}^{2} - 30x + 29x - 870 = 0 \\ x(x - 30) + 29(x - 30) = 0 \\ (x - 30)(x + 29) = 0 \\ x - 30 = 0 \\ x = 30 \\ so \: the \: no \: is \: 30..... \\ thnks$