Question

x^2+7x+10=y solve quadratic formula

Answer 1

what does a=?
b=?
c=?
In this problem?

Answer 2

it doesn't say

Answer 3

I know it doesnt you have to figure it out by looking in the problem.

Answer 4

oh. c=-10? and b=7x?

Answer 5

c is going to be positive so you only have to change the sign.

b is the number next x in 7x
we only want the number not the letter.

a is the number next to x^2 hint for this one: it's not 2 because thats the exponent we want the number left of x since in this case we have no number what will it be?

Answer 6

1

Answer 7

yeah you are correct
a=1
b=7
c=10

Answer 8

Now plug those numbers in for \begin{array}{*{20}c} {x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}} & {{\rm{when}}} & {ax^2 + bx + c = 0} \\ \end{array}

Answer 9

\[\pm \] this signs means you have to do it two times. Once when that sign becomes + and the other is when you replace it with +

that sign means plus and minus

Answer 10

\[-7\pm \sqrt{?}\]

Answer 11

9/2