Need answer now !
leonora is factoring a trinomial. the factors of the trinomial are shown on the model. an algebra tile configuration. 7 tiles are in the factor 1 spot: 1 is labeled + x and 6 are labeled negative. 3 tiles are in the factor 2 spot: 1 is labeled + x and 2 are labeled +. 0 tiles are in the product spot. which trinomial did she factor? x2 + 4x – 12 x2 + 2x – 6 x2 – 8x – 6 x2 – 4x – 12

will be increasing on the intervals where and decreasing wherever . Local extrema occur when and the sign of changes to either side of that point.

is positive when is between -4 and some number between -2 and -1, and also 2 (exclusive) and 4, so you can estimate that is increasing on the intervals [-4, -2] and (2, 4].

is negative when is between some number between -2 and -1, up to some number less than 2. So is decreasing on the interval [-1, 1].

You then have two possible cases for extrema occurring. The sign of changes for some between -2 and -1, and again to either side of .