Question

Determine o binômio que representa:
(3x+5).(3x-5):

Answer 1

( 3x + 5 ) . ( 3x - 5 )

9x² - 15x + 15x - 25

9x² - 25

9x² - 25 = 0

9x² = 25

x² = 25 / 9

x² = 2,777...

Vx² = V2,777...

x = 1,666...