Y = -(x – 4)^2+3
Standard form

Step-by-step explanation:

The standard form of a quadratic equation is:

so to rewrite the equation in this form we do the following steps:

First we apply the formula

so now the equation becomes,

now if we compare the equation that we got with our standard form it is in the exact format thus the value of a = -1 , b = 8 and c = -13

14

step-by-step explanation:

14 x 3 = 42

x = 3 ± √(5+y)