Answered

Westonci.ca makes finding answers easy, with a community of experts ready to provide you with the information you seek. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts. 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
Your visit means a lot to us. Don't hesitate to return for more reliable answers to any questions you may have. We hope you found what you were looking for. Feel free to revisit us for more answers and updated information. Thank you for visiting Westonci.ca. Stay informed by coming back for more detailed answers.