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fonsworth5
06.07.2019 •
Mathematics
The side length, s, of a cube is 3x + 2y. if v = s3, what is the volume of the cube? 3x3 + 18x2y + 36xy2 + 8y3 27x3 + 54x2y + 18xy2 + 2y3 27x3 + 18x2y + 12xy2 + 2y3 27x3 + 54x2y + 36xy2 + 8y3
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Ответ:
We are given side length of a cube = (3x+2y).
Volume is given by formula
, where s is the side of cube.
We have s = (3x+2y).
Plugging s = (3x+2y) in formula now.
We get,
Expanding by applying formula![(a+b)^3=(a)^3 + 3a^2b+3b^2a+(b)^3.](/tpl/images/0055/9439/e3347.png)
![(3x+2y)^3 = 27x^3+54x^2y+36xy^2+8y^3](/tpl/images/0055/9439/d8b29.png)
Therefore, correct option is 4th option :Ответ:
the correct answer is C
Step-by-step explanation: