Answered

Get reliable answers to your questions at Westonci.ca, where our knowledgeable community is always ready to help. Discover a wealth of knowledge from professionals across various disciplines on our user-friendly Q&A platform. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

Wat is 7x² + 4x - 5= 0

Sagot :

konrad509
[tex]7x^2+4x-5=0\\ \Delta=4^2-4\cdot7\cdot(-5)=16+140=156\\ \sqrt{\Delta}=\sqrt{156}=2\sqrt{39}\\ x=\dfrac{-4\pm2\sqrt{39}}{2\cdot7}=\dfrac{-2\pm\sqrt{39}}{7}[/tex]
Answer and workings in the attachment below.
View image Аноним
View image Аноним
We hope our answers were useful. Return anytime for more information and answers to any other questions you have. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. Get the answers you need at Westonci.ca. Stay informed with our latest expert advice.