Hey there!!
The equation given = 3x² + 15x - 18 = 0
a = 3
b = 15
c = -18
Quadratic formula =
- b ± √(b² - 4ac ) / 2a
- 15 ± √ ( 225 + 216 ) / 6
-15 ± √ ( 441 ) / 6
-15 ± 21 / 6
- 15 + 21 / 6
= 6 / 6 = 1 is one of the answer.
- 15 - 21 / 6
- 36 / 6 = -6 is the second answer.
Answers = 1 and -6
Hope my answer helps!
