Question

alguem pode me ajudar com a equação 6y²-7y=2y² 2y

Answer 1

       Na ausência de sinal entre 2y² e 2y, assumo sinal positivo 

                     6y² - 7y = 2y² + 2y
             Reduzindo termos semelhantes
                     6y² - 2y² - 7y - 2y = 0
                                     4y² - 9y = 0
             Fatorando
                                     y(4y - 9) = 0
                                            y = 0
                                                            y1 = 0
                                       4y - 9 = 0
                                            4y = 9
                                              y = 9/4
                                                             y2 = 9/4
                                                                                S = { 0, 9/4 }
                     

Answer 2

$6y^{2} -2y^{2}-7y-2y=0--\ \textgreater \ 4 y^{2} -9 y=0--\ \textgreater \ y (4y-9)=0;$$y=0 , ou, 4y-9=0--\ \textgreater \ 4y=9--\ \textgreater \ y= \frac{9}{4} ;$ S={0;9/4}