The answer is -125x^6
You do
(-5)^3 * (x^2)^3
Your plate numbers will be like
where each 
is a number, and each 
is a letter. Assuming you can use all numbers and letters, you have 10 possible choices for every place (all the digits from 0 to 10) and 26 possible choices for every place (all the letters from a to z).
So, if you multiply all the possible choices, you have
So, there is a total of
possible plate numbers with 3 letters and 3 numbers, if repetitions are allowed.
Given a quadratic function
y = 4x² - 19x - 5
or i will write it as
4x² - 19x - 5 = y
Zero of the function is when y have the value of zero.
So the quadratic equation will be
4x² - 19x - 5 = y
4x² - 19x - 5 = 0
Now make the equation to intercept form by factorization
4x² - 19x - 5 = 0
(4x + 1)(x - 5) = 0 (this is intercept form)
Solution 1
4x + 1 = 0
4x = -1
x = -1/4
Solution 2
x - 5 = 0
x = 5
SUMMARY
-1/4 and 5 are zero function of f(x) = 4x² - 19x - 5
1 2/3, 1.66, 166.66%
btw, put a forever hat above the last 6's in 1.66 and 166.66
a forever hat is just a horizontal line above a number to indicate it goes on forever.
