algebra question, please help, thanks in advance

User Generated

Eonegba16

Mathematics

Description

let f(x)=2x^2+6 and g(x)=-4x+1 

Find (f-g)(-3)=

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Explanation & Answer

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(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


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