Question

(a-2√b)(2√b+a)+2√b Pomogite pj.Zaranee spasibo

Answer 1

$(a - 2 sqrt{b} )(2 sqrt{b} + a) + 2 sqrt{b} = (a - 2 sqrt{b} ) times (a + 2 sqrt{b} ) + 2 sqrt{b} = {a}^{2} - 4b + 2 sqrt{b}$