Justifying the Derivation Quadratic Formula
Two of the steps in the derivation of the quadratic formula
are shown below.
Which operation is performed in the derivation of the
quadratic formula moving from Step 6 to Step 7?
subtracting
from both sides of the equation
Step 6: bar = (+
Step 7: 3462-400 =x+
squaring both sides of the equation
taking the square root of both sides of the equation
taking the square root of the discriminant