Question

(x-2).(x+2)-8=(-2)^2
despejar basicamente

Answer 1

Explicación paso a paso:

(x-2 ) . (x+2)-8 = (-2)²

x² - 2x + 2x - 4 -8 = (- 2)²

x² - 4 - 8 = (-2)²

x² - 4 -8 = 2²

x² - 4 -8 = 4

x² - 12 = 4

x²= 12 + 4

x² = 16

forma de ecuaciones

x=raiz 16 o x= - raiz 16

x= 4 o x=-4