If (x + a) is a factor of 2x2 + 2ax + 5x + 10, find a. from Ma

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 Multiple Choice QuestionsShort Answer Type

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385. If (x + a) is a factor of 2x2 + 2ax + 5x + 10, find a.


Let f (x) = 2x2 + 2ax + 5x + 10 Since, (x + a) is a factor of f(x).
⇒ f(–a) = 0
⇒ 2(– a)2 + 2a.(–a) + 5(–a) +10 = 0
space rightwards double arrow space space space space                    2 straight a squared minus 2 straight a squared minus 5 straight a plus 10 equals 0
 rightwards double arrow                                        negative 5 straight a equals negative 10
 rightwards double arrow                                           <pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array)
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#6 {main}</pre>  Ans. 
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390.

Is <pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array)
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#3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/RenderImpl.class.php(231): com_wiris_plugin_impl_FolderTreeStorageAndCache->codeDigest('mml=<math xmlns...')
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#6 {main}</pre> a polynomial.

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