Fill in the missing steps for the derivation of the quadratic formula using the choices below. On a coordinate plane, 3 labeled A, B, C are shown. Parabola C goes dips below the x-axis, Parabola B has a vertex on the x-axis, and Parabola A has a vertex 4 units above the x-axis.

Step 1: ax2 + bx + c = 0

Step 2: ax2 + bx = −c

Step 3:

Step 4:

Step 5:

Step 6:

Step 7:

Step 8:

..

Step-by-step explanation:

Step 3) B

Step 5) D

Step 6) A

Step 8) C

The second term in the sequence is -9

Step-by-step explanation:

Given the nth term of a sequence to be a(n) = a(n-1)+4 where n is the number of terms of the sequence

If a(1) = -13... (1)

The second term of the sequence is generated for n= 2:

a(2) = a(2-1)+4

a(2) = a(1)+4... (2)

Substituting equation 1 into 2

a(2) = -13+4

a(2) = -9

The second term in the sequence is -8