Question

how to solve; x^2 + 3 = 9x

Answer 1

set it = to 0

Answer 2

put it in standard form then factor or use quadratic formula...
x^2 + 3 = 9x

subtract 9x from bth sides:
x^2 - 9x + 3 = 0

this looks like it is not factorable so use the quadratic formula
ax^2 + bx + c = 0

can you identify a, b, c in your equation?

Answer 3

yeah what he said.

Answer 4

a = 1
b = -9
c = 3

Answer 5

what now?:)

Answer 6

ok. with those values, stick it into this formula.
the quadratic formula is:
\[\large x=\frac {-b \pm \sqrt {b^2-4ac}}{2a}\]

you'll get two irrational solutions

Answer 7

i did all that and now im stuck