They have cross multiplied to get the answer.
(cross multiply)
(expanding)
(collect terms on one side)
Hi,
I'm trying to work out how a question was solved from an example in a book.
x(squared)
------------------- = 6.25
6 - 5x + x(squared)
goes to...
5.25x(squared) - 31.25x + 37.5 = 0
I don't understand how this was done.
any ideas?