Question

Помогите решить (a^2-2)/(a+√2)

Answer 1

(a²-2)/(a+√2) = (a-√2)(a+√2) / (a+√2) = (a-√2)

Answer 2

$\frac{a^2-2}{a+ \sqrt{2} } = \frac{(a+ \sqrt{2})(a- \sqrt{2})}{a+ \sqrt{2}} =a- \sqrt{2}$