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31 October, 17:02

Two sets of quadratic expressions are shown below in various forms: Line 1: x2 + 3x + 2 (x + 1) (x + 2) (x + 1.5) 2 - 0.25 Line 2: x2 + 5x + 6 (x + 2) (x + 3) (x + 2.5) 2 + 6.25

Which line contains 3 equivalent expressions?

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  1. 31 October, 17:11
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    Its line 1

    if we expand the second and third expressions they come back to the first.

    The last one is called the vertex form of a parabola
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