Question

5x2-7x-90=0 porfa ayudenme

Answer 1

Factorizando tenemos
               (x - 5) (5x + 18) = 0

Cada factor debe ser nulo
                     x - 5 = 0
                                                 x1 = 5
                5x + 18 = 0
                        5x = - 18
                                                 x2 = - 18/5

                                                                     S = {- 18/5, 5}