Answered

Discover the answers you need at Westonci.ca, a dynamic Q&A platform where knowledge is shared freely by a community of experts. Discover detailed solutions to your questions from a wide network of experts on our comprehensive Q&A platform. Join our platform to connect with experts ready to provide precise answers to your questions in different areas.

find the zeros of the function f(x)=2x^2-7x-30

Sagot :

naǫ
[tex]2x^2-7x-30=0 \\ \\ a=2 \\ b=-7 \\ c=-30 \\ b^2-4ac=(-7)^2-4 \times 2 \times (-30)=49+240=289 \\ \\ x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}=\frac{-(-7) \pm \sqrt{289}}{2 \times 2}=\frac{7 \pm 17}{4} \\ x=\frac{7-17}{4} \ \lor \ x=\frac{7+17}{4} \\ x=\frac{-10}{4} \ \lor \ x=\frac{24}{4} \\ x=-\frac{5}{2} \ \lor \ x=6 \\ \boxed{x=-2.5 \hbox{ or } x=6}[/tex]
Visit us again for up-to-date and reliable answers. We're always ready to assist you with your informational needs. Thanks for using our platform. We aim to provide accurate and up-to-date answers to all your queries. Come back soon. We're dedicated to helping you find the answers you need at Westonci.ca. Don't hesitate to return for more.