Respuesta :

zrh2sfo

Answer:

b = -c/x - a x

Step-by-step explanation:

Solve for b:

c + b x + a x^2 = 0

Subtract c + a x^2 from both sides:

b x = -c - a x^2

Divide both sides by x:

Answer: b = -c/x - a x

Ver imagen zrh2sfo
shejladautovic

Answer:

B=-2

Step-by-step explanation:

Put the point (0,1) in the equation you will get:

1=c, so now equation looks like

y=ax^2+bx+1.

Put now 2nd point (1,2) you get

2=a+b+1, i.e,

a+b=1....(1)

Now put 3th point (2,9) you have;

9=4a+2b+1, i.e

4=2a+b.....(2)

Now (2)-(1) we have

a=3, so b=-2.

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