Tìm x, biết: a/ 201,6 x x = 20,16 b/ x x 7,2 - x x 6,2 = 201,6

a/ 201,6 x x = 20,16                           b/ x x 7,2 - x x 6,2 = 201,6

x = 20,16 : 201,6                                    x x (7,2 – 6,2) = 201,6

x = 0,1                                                   x x 1 = 201,6

                                                                x = 201,6…