Solve for x 3x^2-21x+3=0

3x2-21x+3=0

Step 1: Use quadratic formula with a=3, b=-21, c=3.

x=-b±√b2-4ac2a

x = - (-21) ±√ (-21) 2-4 (3) (3) 2 (3)

x=21±√4056

x=72+32√5 or x=72+-32√5

answer

x=72+32√5 or x=72+-32√5