Question

(3x-5) (2x-5) = x² + 2x + 3 alguem me ajuda?

Answer 1

( 3x - 5 ) ( 2x - 5 ) = x² + 2x + 3

6x² - 15x - 10x + 25 - x² - 2x - 3 = 0

5x²- 27x + 22 = 0

x = 27+ -√729 - 440
    -------------------------
                10

x = 27 + -√289
   ------------------
             10

x' = 27 + 17
     ------------
           10

x' = 44/10  → x' = 22/5

x" = 27 - 17
      -----------
           10

x" = 10/10  → x" = 1