How can I factorise this equation:
2X^2+17X=9
Hello, juliak!
It's quite straight-forward.
. . Exactly where is your difficulty?
How can I factorise this equation? . $\displaystyle 2x^2+17x\:=\:9$
Get all terms on the left: .$\displaystyle 2x^2 + 17x - 9 \:=\:0$
Then factor: .$\displaystyle (2x-1)(x + 9) \;=\;0$