Question

Can someone please help me understand Quadratic Equations?

Answer 1

Write the equation 0.3x 2 + 5x - 7 = 0 in general form and then choose the value of "b."

A. 70
B. 50
C. 5

Answer 2

@mathmale

Answer 3

what does the general form look like?

Answer 4

I don't know. I am in Cyber School and we just started this subject and I don't understand how to convert it. Sorry :\

Answer 5

general form has the structure f(x) = ax^2 + bx + c

and a vertex form: f(x) = a(x-h)^2 + k

Answer 6

I do know that a cannot equal 0 and cannot be negative, and all numbers must be relatively prime.

Answer 7

a can be negative, but when avoidable they like it to not be negative

Answer 8

a negative 'a' tells us something about the position of the graph is all

Answer 9

oh ok

Answer 10

\[x =\frac{ -b \pm \sqrt{b ^{2}}-4ac }{ 2a }\]
is the quadratic formula

Answer 11

as is, your post already has the general form, excecept it is =0 instead of f(x) =

Answer 12

ok so b=5 right?

Answer 13

since b is the value of the coefficient of the x term ... b=5 in this case yes

Answer 14

I didn't know whether or not it was in general form or not. Thanks for the help :)

Answer 15

youre welcome :)