If F(x)=-2x-3 And G(x)=x^2+5x, What Is G(-3)? | Socratic

If #f(x)=-2x-3# and #g(x)=x^2+5x#, what is #g(-3)#? Algebra

1 Answer

smendyka Apr 15, 2017

See the entire solution process below:

Explanation:

The #f(x)# function is completely extraneous to this problem and will not be used.

To find #g(-3)# substitute #color(red)(-3)# for each occurrence of #color(red)(x)# in the #g(x)# function.

#g(color(red)(x)) = color(red)(x)^2 + 5color(red)(x)# becomes:

#g(color(red)(-3)) = color(red)(-3)^2 + (5 * color(red)(-3))#

#g(color(red)(-3)) = 9 - 15#

#g(color(red)(-3)) = -6#

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