First sheet (picture included) brainliest!

The equations are;

a -b + c = 5

c = -4

16a + 4b + c = 0

Step-by-step explanation:

Generally, the equation of a quadratic formula can be written as;

y = ax^2 + bc + c

From the graph, we have three points and we want to form equations from these points

These points are;

(-1,5) (0,-4) and (4,0)

To get the equation from each point, we make a substitution for both x and y

For the first;

5 = a(-1)^2 + b(-1) + c

5 = a-b + c

For the second;

-4 = a(0)^2 + b(0) + c

c = -4

For the third;

0 = a(4)^2 + b(4) + c

0 = 16a + 4b + c

i can answer this question sweetie!

step-by-step explanation:

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225