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Which of the following is a perfect-squaretrinomial?A. x² - 10x + 20B. 4x² - 2x + 4C. x² - 14x + 49D. x² - 10x + 100 |
Answer» C. x² - 14X + 49Explanation: Because x² - 14x + 49= (x-7)² |
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