I'm trying to figure out if it's possible to use a character string as an
equation, e.g:

eqn1string <- "x^2 + x + 5"

Then I want to tell R:
1) that eqn1string is actually an equation (even though it was stored as a
character string), and
2) to apply the equation to a specified value of x  (e.g. given x <- 6,
what is the result of the equation).

Thanks in advance for any insight anyone may be able to offer.

Emily

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