khadijasuttton khadijasuttton

16-11-2016
Mathematics

contestada

Evaluate the expression below when x = -2.

x2 − 8

x + 6

Respuesta :

atrochelmann atrochelmann

16-11-2016

First, substitute -2 into each equation where there is an x:
(-2)2 -8
(-2) +6

Then multiply the -2 and the 2 in the first equation and add -2 and 6 in the second:
-4 -8
4

Lastly, subtract -4 and 8:
-12
4

Now you have you answers -12 and 4!

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