How many integers x satisfy the equation
(x^2 \minus{} x \minus{} 1)^{x \plus{} 2} \equal{} 1
<spanclass=′latex−bold′>(A)</span>2<spanclass=′latex−bold′>(B)</span>3<spanclass=′latex−bold′>(C)</span>4<spanclass=′latex−bold′>(D)</span>5<spanclass=′latex−bold′>(E)</span>none of these