Question

factorie:1) 2x^2+x -45.​

Answer 1

Answer:

right answer:x=5 or 9/2

Step-by-step explanation:

2x²+x-45=0

⇒2x²+10x-9x-45=0

⇒2x(x+5)-9(x+5)=0

⇒(x+5)(2x-9)=0

⇒x=5 or 9/2

Answer 2

Answer:

$(x+5)\left(x-\dfrac{18}{4}\right)$

Step-by-step explanation:

$2x^2+x-45$

$x=\dfrac{-1\pm \sqrt{1^2-4(2)(-45)}}{2(2)}\\\\=-5,\dfrac{18}{4}$

$\rightarrow 2x^2+x -45=(x+5)\left(x-\dfrac{18}{4}\right)$