It means that a + n + mc + cg = 0
Assuming you mean n2 + 11n + 30, the factors are (n + 6)(n + 5).
Ctrl+r
Magnify the information displayed on the screen.
superscript
Ctrl plus N opens a new window in a browser.
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In Microsoft Word, Ctrl+E allows you to center.
See the link below for a possible answer.
Underline
ctrl an plus zoom the screen in an ctrl minus dezooms it
Ctrl + U will underline text that is selected. Ctrl and the plus sign will superscript text. You need to hold the shift key while doing that, otherwise it subscripts the text.
[CTRL]+C is achieved by holding CTRL while pressing C.
ctrl shift - reverses the effect of ctrl shift =
ctrl plus r reloads a webpage.
The keyboard shortcut notation ctrl plus esc means you press the Control key concurrently with the Escape key. On a Windows PC, the Ctrl + Esc shortcut produces the Start Menu.
Ctrl + 1