Answer:
x = 116?
Step-by-step explanation:
<h3><em>11) x+61 + x+51 + 80 = 180 ( angle sum property )</em></h3><h3><em>2x + 192 = 180 </em></h3><h3><em>2x = 180 - 192 </em></h3><h3><em>2x = -12</em></h3><h3><em>x = -12/2</em></h3><h3><em>x = -6 </em></h3><h3><em>12) x+52 + 67+x + 75 = 180 ( angle sum property )</em></h3><h3><em>2x + 194 = 180 </em></h3><h3><em>2x = 180 - 194 </em></h3><h3><em>2x = -14</em></h3><h3><em>x = -14/2 </em></h3><h3><em>x = -7 </em></h3><h2><em>HOPE IT HELPS !!!</em></h2>
Answer:
x^2 - 2x
Step-by-step explanation:
Distribute the x to every term in the parenthesis.