First, note that
Then use the formula for the sum of perfect cubes:
![a^3+b^3=(a+b)(a^2-ab+b^2).](https://tex.z-dn.net/?f=a%5E3%2Bb%5E3%3D%28a%2Bb%29%28a%5E2-ab%2Bb%5E2%29.)
Therefore,
![x^3 + 343=x^3+7^3=(x+7)(x^2-7x+49).](https://tex.z-dn.net/?f=x%5E3%20%2B%20343%3Dx%5E3%2B7%5E3%3D%28x%2B7%29%28x%5E2-7x%2B49%29.)
The quadratic trinomial
couldn't be factored anymore, so the expression
has two factors
and
Answer: correct choice is A.
Answer:
The identity property of multiplication, also called the multiplication property of one says that a number does not change when that number is multiplied by 1. Ex. 12x1=12
When presented with a box plot, it is better to identify the 5 numbers that are important in the box plot.
5 number summary of the boxplot.
1) minimum number - 16
2) 1st quartile - 21
3) 2nd quartile or median - 26
4) 3rd quartile - 29
5) maximum number - 34
Range is the difference of the maximum value from the minimum value of the data set.
Interquartile range is the difference of the 3rd quartile from the 1st quartile.
Range: 34 - 16 = 18
IQR: 29 - 21 = 7
Answer:
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