Question

x2-6x-7
polynomial expressions ?

Answer 1

@youngstar10 .. do u want to factorize it for the zeros..?

Answer 2

I have to use the quadratic formula

Answer 3

so do u know the quadratic formula..?
if yes, then try to solve it..

Answer 4

I know its x=-b+or - the square root of b^2-4ac divided by 2a

Answer 5

yeah it is..

Answer 6

The general formula of a quadratic equation is \[ax^{2} + bx + \]

Answer 7

c

Answer 8

so try using these..in the equation ... or should i solve it , first and then explain..?

Answer 9

solve it then explain im a visual learner

Answer 10

\[d = \sqrt{b ^{2}- 4ac}\]

=> D = sqrt 36 + 28
= \[\sqrt{64} = \pm 8\]

Answer 11

and.. u know the value of b = -6
=> -b = 6
and
a = 1..
so using it in the equation we get
first zero to be = (6 +8)/2 = 7
and the other zero to be = (6-8)/2 = -1