Question

a la a doua - b la a doua=1b si a-b=1 calculati a+b

Answer 1

a^2-b^2 = (a-b) x (a+b)

a-b=1=> 1 x (a+b) = 1b => a + b = 1b

a-b=1 => a = b+1

(b+1) + b = 1b => 2b + 1 = 1b => 2b - 1b = -1 => b = -1

=> a +b = -1