Question

let f(x) = 2x+5. if x unequal 0 then find f(x+2) - f(2) ÷ x


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Answer 1

f(x) = 2x+5

f(x+2) = 2(x+2) + 5 = 2x+4+5 = 2x+9

f(2) = 2×2+5 = 4+5 = 9

Now,

f(x+2)-f(2) ÷ x

=>(2x+9-9)÷x

=>2x÷x

=>2

Cheers!