The steps to derive the quadratic formula are shown below:
step 1
ax2 + bx + c = 0
step 2
ax2 + bx = − c
step 3
x2 +
step 4
x2 +
step 5
x2 +
step 6
step 7
step 8
x = −
step 9
x =
which of the following is the first incorrect step? (1 point)
step 4
step 6
step 7
step 8