If a(a + 6) = 7 and b(b + 6) = 7, where a ≠ b, then a + b =	Choose the correct choice from the following:  A) −48  B) −6  C) 2  D) 46  E) 48
a(a + 6) = 7   =&gt; we have a = 1 or -7   also b(b + 6) = 7   =&gt; b = 1 or -7   given a ≠ b   1) when a =1, b= -7 and a + b = -6   1) when a = -7, b= 1 and a + b = -6   Answer choice −6
<result>B</result>
If a(a + 6) = 7 and b(b + 6) = 7, where a ≠ b, then a + b =