f(x)=2x^2+4x-3

Show work please.

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2x^{2}+4x-3

Difference Quotient

{2(x+h)^{2}+4(x+h)-3 -2x^{2}-4x+3}/h

{2{ (x+h)^{2}-x^{2}}+4(x+h-x)}/h

{2(2xh+h^{2})+4h}/h

{h(4x+4)+h(2h)}/h

h{4 (x+1)+2h}/h

4(x+1)+2h

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