8ve7wpcc92 8ve7wpcc92 30-09-2020 Mathematics contestada Solve |7x+21| =14x identify the solution and extraneous solution. a) solution: x=3; extraneous solution x=-3 b) solution x=3; extraneous solution: x=-1 c) solution: x=-1 extraneous solution: x=3 d) solution: x=1 extraneous solution: x=-3
