How do you solve #x^2 = 7x +8# using the quadratic formula?
1 Answer
Apr 11, 2016
-1 and 8
Explanation:
Since (a - b + c = 0), use shortcut.
The 2 real roots are: - 1 and
Reminder of Shortcut.
- When a + b + c = 0 --> 2 real roots: 1 and
#c/a# - When a - b + c = 0 --> 2 real roots: -1 and
#- c/a#
