Question

a (x mas b) - (x mas a)² = x²

Answer 1

$a(x + b) - {(x + a)}^{2} = {x}^{2} \\ ax + ba - ( {x }^{2} - 2ax + {a}^{2} ) = {x}^{2} \\ 3 ax + ba - 2{x}^{2} - {a}^{2} = 0 \\ 2{x}^{2} - 3ax - ba + {a}^{2} = 0$