1.

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 + 49

Explanation:

Because x² - 14x + 49= (x-7)²



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