brick2009 Master | Next Rank: 500 Posts View User Profile Posts: 171 Joined: Mon Jun 01, 2009 8:59 pm Thanked: 8 times solve this by brick2009 » Thu Dec 03, 2009 11:05 pm If ab = -9, what is the value of ab(a + b) ? (1) a - b = √100 (2) ab2 = -81 OA: E Top Quote