So, hmmm keeping in mind that, an absolute value expression is in effect a piece-wise function, let's find its "slopes", the negarive slope on the left-side and the positive slope on the right side, and let's use the vertex point as our first point
what is the slope of a line that passes through (2, -1) and (0,7)

now, what is the slope of a line that passes through (2, -1) and (4,7)

since an absolute value expression is just a piece-wise with a +/- versions, then we can just combine those two.
Answer:
The expression consists of 2 factors, and each factor contains 3 terms.
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