Answered

Westonci.ca makes finding answers easy, with a community of experts ready to provide you with the information you seek. Discover detailed solutions to your questions from a wide network of experts on our comprehensive Q&A platform. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

solve quadratic equation by completing the square
x²+2x-15=0

Sagot :

[tex]x^2+2x-15=0\\\\x^2+2x\cdot1+1^2-1^2=15\\\\(x+1)^2-1=15\\\\(x+1)^2=15+1\\\\(x+1)^2=16\iff x+1=4\ or\ x+1=-4\\\\x=4-1\ or\ x=-4-1\\\\\underline{\underline{x=3\ or\ x=-5}}[/tex]
We hope our answers were useful. Return anytime for more information and answers to any other questions you have. We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. Westonci.ca is committed to providing accurate answers. Come back soon for more trustworthy information.