Cammryn123 Cammryn123

23-04-2017
Mathematics

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If f(x) = 2x2 + 3x and g(x) = x – 2, what is (f + g)(2)?

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zebsi0n zebsi0n

23-04-2017

[tex]f(x) = 2x^2+3x [/tex]
[tex]g(x) = x-2[/tex]
First find (f + g)
[tex](f+g) = 2x^2+3x+x-2[/tex]
[tex](f+g)=2x^2+4x-2[/tex]
Now multiply by 2.
[tex](f+g)(2)=2(2x^2)+2(4x)+2(-2)[/tex]
[tex](f+g)(2) = 4x^2+8x-4[/tex]

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