Factor by grouping x^3-4x^2+7x-28

Mathematics

1 answer:

Komok [63]3 years ago

5 0

Answer:

(x - 4)(x^2 + 7)

Step-by-step explanation:

x^2 is a factor of the first two terms: x^3 - 4x^2 = x^2(x - 4).

7 is a factor of the last two terms: 7(x - 4).

Note how (x - 4) is a factor of the entire four-term expression given above.

Then: x^3-4x^2+7x-28 = (x - 4)(x^2 + 7)

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Lisa [10]

Answer:

See attachment

Step-by-step explanation:

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3 years ago

Find the coordinates of point P

Drupady [299]

Here is the formula for finding a partitioning point:
x=x1+k(x2-x1), y=y1+k(y2-y1)
k is the ratio of the segment from the beginning point to the partitioning : the whole segment. In this case, k=AP:AB=5/16
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Please double check my calculation by yourself.

refer to this website for the formula and how to find k:

"This ratio is called k, and is determined by writing the numerator over the sum of the numerator and the denominator of the original ratio."
https://cobbk12.blackboard.com/bbcswebdav/institution/eHigh%20School/Courses/CCVA%20CCGPS%20Coordina....

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3 years ago

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zheka24 [161]

Answer:

Step-by-step explanation: