PLZ HELP I DONT UNDERSTAND (show steps)

Step-by-step explanation:

perfect sqaure formula (u+w)²=u²+2uw+w²

ax²+bx+c=0  divide by a

 so u=1, 2uw=2*1*w= b/a, so w=b/2a

now that we formed the perfect sqare solve

but we can factor a negative in front of the fraction

now isolate the 2 terms and squareroot both sides

and you will be left with

 subtract b/2a from both sides

x=

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)

step-by-step explanation: