Quadratic Equation 2 - DEPED-LDN

In this trinomial, notice that if you take one-half the coefficient of the x in the middle term and square it, you get the third term. x2 + 2bx + b2 ((2b)(2 = (b)2 = b2. Therefore, to make an expression such as x2 + 12x into a perfect square trinomial, you must take one-half of 12, square it and add it to x2 + 12x. ................
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