!!!!!!!!СРОЧНО ПОДРОБНО!!!!!!!!
1) 2√x + 3√x - 5√x = √x * (2 + 3 - 5) = 0 * √x = 0 2) 5√a + 3√b - √a + 2√b = √a * (5 - 1) + √b * (3 + 2) = 4√a + 5√b 3) √225 + 3√121 = ±15 + 3 * ±11 = a) 15 + 3 * 11 = 48 б) -15 + 3 * 11 = 18 в) 15 + 3 * -11 = - 18 г) -15 + 3 * -11 = -48