Question

Упростите выражение (√x+√y)(^4√x-^4√y)(^4√x+4^√y)

Answer 1

a² - b² = (a - b)(a + b)

a - b = (√a - √b)(√a + √b)

(√x + y)(⁴√x - ⁴√y)(⁴√x + ⁴√y) = (√x + √y)(√x - √y) = x - y