If a(a + 8) = 9 and b(b + 8) = 9, where a ≠ b, then a + b =  Options.
A) −8 B) −2 C) 2 D) 46 E) 48
a(a + 8) = 9   =&gt; we have a = 1 or -9   also b(b + 8) = 9   =&gt; b = 1 or -9   given a ≠ b   1) when a =1, b= -9 and a + b = -8   1) when a = -9, b= 1 and a + b = -8   −8nswer choice −8
<result>A</result>
If a(a + 8) = 9 and b(b + 8) = 9, where a ≠ b, then a + b =