Use the quadratic formula
9x^2+3x-1=0

9x2+3x−1=0

Step 1: Use quadratic formula with a=9, b=3, c=-1.

x= −b±√b2−4ac

2a

x= −(3)±√(3)2−4(9)(−1)

2(9)

x= −3±√45

18

x= −1

6

+

1

6

√5 or x=

−1

6

+

−1

6

√5

x=

−1

6

+

1

6

√5 or x=

−1

6

+

−1

6

√5

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.

2

step-by-step explanation: