Answer:
s2−42s+180=0
Step 1: Use quadratic formula with a=1, b=-42, c=180.
s=
−b±√b2−4ac
2a
−(−42)±√(−42)2−4(1)(180)
2(1)
42±√1044
2
s=21+3√29 or s=21−3√29
