Luca solved an equation as shown, and verified that his solution was correct. explain what luca’s error is and why his answer is not completely correct.

Does your response include the following?

Luca did not square the right side of the equation properly.

When the binomial with the radical term is squared, the result still has a radical.

After simplifying, both sides of the equation have to be squared again.

After simplifying, the resulting quadratic trinomial can be solved by factoring.

There are actually two solutions: x = 3 and x = 7.

Step-by-step explanation:

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )