Answered

Join the growing community of curious minds on IDNLearn.com and get the answers you need. Ask your questions and receive reliable, detailed answers from our dedicated community of experts.

What multiplies to get -1040 and adds to get 109?

Sagot :

Apologiabiologyidn
so xy=-1040 and x+y=109
a negative times a positive = a negative so x or y must be negative and only one

so xy=-1040
x+y=109
subtract x from both sides
y=109-x
subsitute y=109-x into xy=-1040

x(109-x)=-1040
109x-x^2=-1040
add x^2 to both sides
109x=-1040+x^2
subtract 109x from both sides
x^2-109x-1040=0
 put it in the quatdratic formula and get
x=[{(7721)^(1/2)}+109]/2 or [{(7721)^(1/2)}-109]/2
We are happy to have you as part of our community. Keep asking, answering, and sharing your insights. Together, we can create a valuable knowledge resource. IDNLearn.com has the solutions you’re looking for. Thanks for visiting, and see you next time for more reliable information.