Find the value of a and b if 7 + 3 root 5 by 3 + root 5 minus 7 minus 3 root 5 by 3 minus root 5 is equal to a + root 5 b
pls .
by means fraction.

What is the vertex form of f(x) = x2 + 6x + 3

How do you write y-10=2 (x-8) in standard form

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score