Question

9x2-155x-500 factorise by quadratic formula.


Please give me full solution by solving quadratic formula.


Many of you solved this by splitting mid term method.
so thanks.


I want to solve this by quadratic formula.
I have problem to this by quadratic formula.​

Answer 1

Answer:

x=20 or -25/9

Step-by-step explanation:

9x²-155x-500=0

a=9;b=-155;c=-500

D=b²-4ac

D=(-155)²-4(9)(-500)

D=24025+18000

D=42025

√D=205

x=(-b+-√D)/2a

x=(155+-205)/18

x=(155+205)/18 or (155-205)/18

x=360/18 or -50/18

x=20 or -25/9

Answer 2

Answer:

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