Question

gente me ajudem é produtos notáveis


a) (x+1/2).(x-1/2)

b) (x/4+2/3).(x/4-2/3)

Answer 1

$a) \\ (x+ \frac{1}{2} ).(x- \frac{1}{2} )= \\ \\ =x^2- \frac{x}{2} + \frac{x}{2} - \frac{1}{4} = \\ \\ x^2- \frac{1}{4} \\ \\ \\ b) \\ ( \frac{x}{4} + \frac{2}{3} ).( \frac{x}{4} - \frac{2}{3} )= \\ \\ =( \frac{x^2}{16} - \frac{2x}{12} + \frac{2x}{12} - \frac{4}{9}) = \\ \\ = \frac{x^2}{16} - \frac{4}{9}$

Answer 2

a) ( x + 1/2 ) ( x - 1/2) = x² - 1/4
b) ( x/4 + 2/3 ) (x/4 - 2/3 ) =x² /16 - 4/9