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x 4 -8 x 3 +22 x 2 -24 x +25 . how can we define it increasing & decreasing area if its answer is (x-1) (x-2) x-3). I -powers

x4-8x3+22x2-24x+25 . how can we define it increasing & decreasing area if its answer is (x-1) (x-2) x-3).  I-powers

Grade:12

1 Answers

vikas pandey
33 Points
11 years ago

as its factor are 1 , 2 and 3 . draw all these on number line and give alternative + and - sign starting from right to left . the portion where there is a positive sign is increasing area and where there is a - sign is decresing area . and acc to this questin the incresing area is (1,2)υ (3,∞) and the remaining area is decreasing

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