Question

x^2-9x+20 factorise quadratics

Answer 1

familiar with quadratic formula?

Answer 2

no :(

Answer 3

this one can be factorized

Answer 4

can u factorize @Raeee_009 ?

Answer 5

Quadratic formula


\[x=-b \pm \sqrt{b^2-4ac}/2a\]

Answer 6

\[x = \frac{ -b \pm \sqrt{b ^{2}-4ac } }{ 2a}\]
this is the quadratic formula
now look at your equation it's x^2-9x+20
so a =1 ,b = -9 , c = 20
just plug in values you will get 2 values of x

Answer 7

that is so confusing

Answer 8

yes - you asked about factoring
quadratics factor to the form
(x +/- a)(x +/- b)

Answer 9

to find a and b you need the product ad = +20 and sum = -9
can u think of 2 numbers which fit this requirement?

Answer 10

* product ab = + 20

Answer 11

hmm.. still don't get it :(

Answer 12

20 = -4 * -5 right?

Answer 13

yeah

Answer 14

and -4 + -5 = ?