This is the derivation of an equation we all know. The equation:
STEP 1, set the coefficient of the first term to one.
(3)STEP 2, Subtract the third term from both sides:
(4)STEP 3, Take one half of the middle term, square it and add to both sides of the equation:
(5)The goal here is to get the left hand term to be a perfect square trinomial. STEP 4. Factor the left hand side of the equation.
(6)Step 5, Find the least common denominator for the right hand side:
(7)STEP 6, Take the square root of both sides:
(8)Step 7, Solve for x