Answered

Westonci.ca is the premier destination for reliable answers to your questions, provided by a community of experts. Join our platform to connect with experts ready to provide detailed answers to your questions in various areas. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

What two numbers add up to 9 and multiply to -90?

Sagot :

crisforp
You solve the equation : t^2 - 9t - 90 = 0 ;
Δ = ( - 9 )^2 - 4 * 1 * ( - 90 ) = 81 + 360 = 441 ;
t1 = ( 9 + [tex] \sqrt{441} [/tex]) / 2 = 30 / 2 = 15 ;
t2 = ( 9 - [tex] \sqrt{441} [/tex]) / 2 = -12 / 2 = - 6 ;

The numbers are 15 and - 6 ;
Thank you for trusting us with your questions. We're here to help you find accurate answers quickly and efficiently. Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. Get the answers you need at Westonci.ca. Stay informed by returning for our latest expert advice.