How do you solve by completing the square: #x^2 + 8x + 2 = 0#?
2 Answers
The answer is
The general form of a trinomial is
Solve the trinomial
First move the constant to the right side by subtracting 2 from both sides.
Divide only the coefficient of 8x by 2. Square the result, and add that value to both sides of the equation.
The left side is now a perfect square trinomial. Factor the perfect square trinomial.
Take the square root of each side and solve.
Source:
http://www.regentsprep.org/regents/math/algtrig/ate12/completesqlesson.htm
The answer is
The general form of a trinomial is
Solve the trinomial
First move the constant to the right side by subtracting 2 from both sides.
Divide only the coefficient of 8x by 2. Square the result, and add that value to both sides of the equation.
The left side is now a perfect square trinomial. Factor the perfect square trinomial.
Take the square root of each side and solve.
Source:
http://www.regentsprep.org/regents/math/algtrig/ate12/completesqlesson.htm