title: Boolean expression F = x'y + xyz':
body: <ol>
  <li><p>Using <strong>DeMorgan's</strong> theorem show that:</p>
  
  <p>a. <code>(A + B)'(A' +B)' = 0</code></p>
  
  <p>b. <code>A + A'B + A'B' = 1</code></p></li>
  <li><p>Boolean expression <code>F = x'y + xyz':</code></p>
  
  <p>Derive an algebraic expression for the complement <code>F'</code></p>
  
  <p>Show that <code>F·F' = 0</code></p>
  
  <p>Show that <code>F + F' = 1</code></p></li>
  </ol>
  
  <p>Please Help me</p>