Answered

Welcome to Westonci.ca, the place where your questions find answers from a community of knowledgeable experts. Explore thousands of questions and answers from knowledgeable experts in various fields on our Q&A platform. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

Show that 9x^2-17x-85=0 give you solutions to 3 correct significant figures
There are two possible answers for x

Sagot :

kate200468
[tex]9x^2-17x-85=0\\\\\Rightarrow\ \ \ \Delta=(-17)^2-4\cdot9\cdot(-85)=289+3060=3349\\\\\Delta>0\ \ \ \Rightarrow\ \ \ two\ real\ solution:\\\\x_1= \frac{\big{17- \sqrt{3349} }}{\big{2\cdot9}} =-2.27058584361...\approx-2.271\\\\x_2= \frac{\big{17+ \sqrt{3349} }}{\big{2\cdot9}} =4.1594747325...\approx4.159[/tex]
Thanks for using our service. We're always here to provide accurate and up-to-date answers to all your queries. We appreciate your time. Please come back anytime for the latest information and answers to your questions. Get the answers you need at Westonci.ca. Stay informed with our latest expert advice.