How do you solve #x - y = 4# and #y = x² - 34# using substitution?
Since one of the variables is already isolated in one of the equations (y; equation II), we can immediately substitute.
You can solve this by factoring. With trinomials
Substituting both solutions for x in the original equation we get:
Thus, the solution set is
- Solve the following systems by substitution. Leave answers in exact form when necessary.