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grin007 [14]
2 years ago
9

The side length, s, of a cube is 3x + 2y. If V = s3, what is the volume of the cube?

Mathematics
2 answers:
Rom4ik [11]2 years ago
8 0

Answer:

27x^3+8y^3+54x^2y+36xy^2

Explanation:

We have given with a cube whose side is 3x+2y and we need to find  the volume of a cube

Whose volume is defined by v=s^3

So, according to the formula we will get

(3x+2y)^3

Using the fomula

(a+b)^3=a^3+b^3+3a^2b+3ab^2

Here a=3x and b=2y substituting in the formula we will get

(3x+2y)^3=(3x)^3+(2y)^3+3(3x)^2(2y)+3(3x)(2y)^2

After simplification we will get

27x^3+8y^3+54x^2y+36xy^2

Hence, volume of cube is  27x^3+8y^3+54x^2y+36xy^2

Thepotemich [5.8K]2 years ago
6 0
V = (3x + 2y)³ = (3x + 2y)(3x + 2y)(3x + 2y)
V = (9x² + 12xy + 4y²)(3x + 2y)
V = 27x³ + 36x²y + 12y²x +18x²y + 24xy² + 8y³
V = 27x³ + 54x²y + 36y²x + 8y³
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