Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Factorisation

Short Answer Type

121.

Find and correct the errors in the following mathematical statement:

$left parenthesis 2 straight x right parenthesis squared space plus space 4 left parenthesis 2 straight x right parenthesis space plus space 7 space equals space 2 straight x squared space plus space 8 straight x space plus space 7$

67 Views

122.

Find and correct the errors in the following mathematical statement:

$left parenthesis 2 straight x right parenthesis squared space plus space 5 straight x space equals space 4 straight x space plus space 5 straight x space equals space 9 straight x squared$

72 Views

123.

Find and correct the errors in the following mathematical statement:

$left parenthesis 3 straight x plus 2 right parenthesis squared space equals space 3 straight x squared space plus space 6 straight x space plus space 4$

92 Views

124.

Substituting x = – 3 in

$space space straight x squared plus 5 straight x plus 4$ gives $left parenthesis negative 3 right parenthesis squared space plus space 5 left parenthesis negative 3 right parenthesis space plus space 4 space equals space 9 space plus space 2 space plus space 4 space equals space 15$

79 Views

125.

Substituting x = – 3 in

$<pre>uncaught exception: mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56 #0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array) #1 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php(56): mkdir('/home/config_ad...', 493) #2 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/FolderTreeStorageAndCache.class.php(110): com_wiris_util_sys_Store->mkdirs() #3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/RenderImpl.class.php(231): com_wiris_plugin_impl_FolderTreeStorageAndCache->codeDigest('mml=<math xmlns...') #4 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/TextServiceImpl.class.php(59): com_wiris_plugin_impl_RenderImpl->computeDigest(NULL, Array) #5 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/service.php(19): com_wiris_plugin_impl_TextServiceImpl->service('mathml2accessib...', Array) #6 {main}</pre>$ gives $left parenthesis negative 3 right parenthesis squared space minus space 5 left parenthesis negative 3 right parenthesis space plus space 4 space equals space 9 space minus space 15 space plus space 4 space equals space minus 2$

91 Views

126.

Substituting x = – 3 in

x² + 5x + 4 gives (-3)² + 5(-3) = -9 - 15 = - 24

80 Views

127.

Find and correct the errors in the following mathematical statement.

(y - 3)² = y² - 9

123 Views

128.

Find and correct the errors in the following mathematical statement.

(z + 5)² = z² + 25

86 Views

129.
Find and correct the errors in the following mathematical statement.

(2a + 3b) (a - b) = 2a² - 3b²

(2a + 3b)(a - b) = 2a² - 3b²

∵ (2a + 3b) (a - b) = a(2a + 3b) - b (2a + 3b)

= 2a² + 3ab - 2ab + 3b²

= 2a² + ab +3b²

∴ The correct statement is

(2a + 3b) (a - b) = 2a² + ab + 3b²

86 Views

130.

Find and correct the errors in the following mathematical statement.

(a + 4) (a + 2) = a² + 8

87 Views

Previous Year Papers

Test Series

Test Yourself

Short Answer Type

129. Find and correct the errors in the following mathematical statement.(2a + 3b) (a - b) = 2a2 - 3b2

129.
Find and correct the errors in the following mathematical statement.

(2a + 3b) (a - b) = 2a² - 3b²