need step by step help,
The graph of y = ax 2 + bx + c passes through the points (-2, 0), (0, -2), and (2, 0). Determine the solution set of 0 = ax 2 + bx + c.

Question

need step by step help,
The graph of y = ax 2 + bx + c passes through the points (-2, 0), (0, -2), and (2, 0). Determine the solution set of 0 = ax 2 + bx + c.

kaederfds · Answer

0=4a+2b+c ..... (1)
0=4a-2b+c ....... (2)
we can find that b=0

in (1) 
0=4a+0+c
-2=c ..... (3)

(3) >> (2)
a=1/2

so the solution set is a =1/2; b=0; c=(-2)
^^

anonymous · Answer

thanks(:
can you halp me with this one too? 
$$-3/4x ^{2} +2$$

anonymous · Answer

if the equation is written in general form, what is c?

kaederfds · Answer

c=2

anonymous · Answer

okay, thank you so much:D