Question

What are the exact solutions of x^2 = 5x + 2?

Answer 1

Can you help me @Directrix

Answer 2

here we can rewrite the equation, as follows:
\(x^2-5x-2=0\)

Answer 3

You need to rewrite this in the form \[ax ^{2}+bx+c \]

Answer 4

Hola

Answer 5

then ask yourself can I factor this? or do I need to apply the quadratic formula

Answer 6

Guess what?

Answer 7

Tengo que ir a caca .

Answer 8

it can not be factored... right?

Answer 9

since the discriminant is not a perfect square, I think then we have to use the quadratic formula

Answer 10

yes so you must apply this formula

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

Answer 11

ok

Answer 12

quadratic functions are in the form

\[ax ^{2}+bx+c \]

you must identify what numbers correspond to a,b and c

in what we have here

\[x^{2}-5x-2 \]

Answer 13

a=1 b=-5 c=-2

Answer 14

good now, plug these into your formula

Answer 15

then show us what your result is.