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Karo-lina-s [1.5K]
3 years ago
15

1 A polynomial expression of degree three is shown below.

Mathematics
2 answers:
nekit [7.7K]3 years ago
5 0

Answer:

C: (2x+5)(4x^2-10x+25)

Step-by-step explanation:

First of all, you need to be able to recognize the two terms as cubes, and what they are cubes of. In this case, 8x^3 = (2x)^3 and 125=5^3.

Then you have to find a way you like to remember the formula for how to factorize. The way I do it is by saying "the binomial has the same zero as the original, so x^3+a^3=(x+a)(...) and x^3-a^3 = (x-a)(...) and the whole expression has one minus sign attached to the second term of either factor. In the sum of cubes first parenthesis has a plus, so the second term of the other parentesis has to take that minus: x^3+a^3=(x+a)(x^2-ax+a^2) while in the difference of cubes you already used a minus, so everything else goes plus: x^3-a^3=(x-a)(x^2+ax+a^2)

Or you commit the two formulas to memory.

Natasha2012 [34]3 years ago
3 0

Answer:

D şıkkı iyi dersler hadi

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