algebra question, please help, thanks in advance

label Algebra
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let f(x)=2x^2+6 and g(x)=-4x+1 

Find (f-g)(-3)=

Sep 23rd, 2015

Thank you for the opportunity to help you with your question!

(f – g)(x) = f(x) – g(x)

              = 2x^2+6 - ( -4x+1 )

             = 2x^2+6 + 4x - 1

             = 2x^2 + 4x + 5

(f-g)(-3) = 2(-3)^2 + 4(-3) + 5             ( substitute -3 in place of x)

             = 2*9 -12 +5

            = 18 - 12 +5

           = 11


answer is

(f-g)(-3) =11



hope you understood..please message if you have any doubts...thank you
Sep 23rd, 2015

AWESOME! Thank you so much for explaining how to do it!

Sep 23rd, 2015

you are welcome

if you have any doubts in this question or any new question..please assign me as your tutor

thank you for working with me.

Sep 23rd, 2015

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