Question

Cual es el resultado de multiplicar (3x^1/2+y)(3x^1/2-y)?

Answer 1

(3x^1/2 + y)(3x^1/2 - y) = (3√x + y)(3√x - y)

Utilizar:  (a + b)(a - b) = a² - b²
 
(3√x + y)(3√x - y)
a = 3√x
b = y

(3√x + y)(3√x - y) = (3√x)² - y²

(3√x + y)(3√x - y) = 9x - y²