LESSON 4: SOLVING QUADRATIC EQUATIONS BY COMPLETING THE Let's Recall A. Fill in the blank to make the trinomial a perfect square. 2) x²14x + below. 2) (3x + 5)² 1)x² + 12x +9 B. Expand the given polynomial SQUARE 1) (x + 2)² C. Simplify the following radicals. 1) √12 2) 2√27 3) x² + 12x +1 3) (+)² 3) IT √50 5​